{"title":"500 Series EQ","description":null,"products":[{"product_id":"purple-audio-tav-10-band-inductor-eq","title":"Purple Audio TAV 500 Series 10-Band Inductor EQ","description":"\u003cp\u003eThe \u003cstrong\u003ePurple Audio TAV\u003c\/strong\u003e 500 Series 10-band inductor EQ is a take on the console graphic, with ten easy to use bands. Each band uses a high quality inductor and carefully selected caps to set the center frequency. At full boost and full cut the bands are narrow enough to still be useful individually, but at lower settings the bands widen out for more gentle shaping. Even at full boost and cut, the filters are shaped to be musical and useful.\u003c\/p\u003e\r\n\r\n\u003cp\u003eAn illuminated push button for relay true bypass (green) allows for easy comparison with unprocessed source material. A Tricolor LED meters the signal. With the low and high cut switched out, and all four bands set to 0, the frequency response is ±0.25 dB from 15 Hz to 25 kHz, and -3 dB at 60 kHz. With specialized input and output transformers, the TAV has plenty of headroom, even at full boost. The entire circuit is discrete, with no electrolytic capacitors in the signal path, and no servo amps. With only two active stages, the current draw is low enough to work in any rack, and leave plenty of juice for other modules. \u003c\/p\u003e","brand":"Purple Audio","offers":[{"title":"Default Title","offer_id":44449236222055,"sku":"10526","price":775.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/purple_audio_tav10_1.jpg?v=1787088255"},{"product_id":"a-designs-em-peq-500-series-module","title":"A Designs Audio EM-PEQ 500 Series Equalizer","description":"\u003cp\u003eOne of the most venerated equalizers of all time, the all-tube Pultec EQP-1A has been cherished by recording and mastering engineers for its almost magical ability to improve the sound of nearly any signal running through it. Now, after considerable research and development, the \u003cstrong\u003eA Designs Audio EM-PEQ\u003c\/strong\u003e has captured the essence of the highly revered Pultec EQP-1A and placed it in the compact and popular 500-Series form - with no compromise in sonics or build quality. Along with modern performance enhancements, the A-Designs Audio EM-PEQ meticulously maintains the EQ-section design and control layout of the original Pultec EQP-1A, as well as its wonderfully smooth musicality. It also has the same frequency settings and inductors that made the Pultec a must-have for capturing the bottom end. Makeup amplification is achieved through the use of the same discrete Class AB amplifier found in A-Designs Audio’s immensely popular solid-state Pacifica mic preamp—putting a slightly unique and modern twist on the classic design of yesteryear.   \u003c\/p\u003e\r\n\u003cp\u003eThe EM-PEQ’s controls attenuate high band at 5, 10, 20 kHz; vary bandwidth AND boost mid to high band at 3, 4, 5, 6, 10, 12, 16 kHz; and boost or attenuate the low band at 20, 30, 60, or 100 Hz. Boost and attenuation range from 0 dB to ±10 dB.   \u003c\/p\u003e\r\n\u003cp\u003eAdditional features of the EM-PEQ include a nickel-core output transformer, gold Grayhill rotary switches, Wima caps, and a true hard-wired bypass. Plus, instead of using common off-the-shelf chokes, A-Designs uses a custom tapped inductor, wound to the original values as the original Pultec. Along with the classic EQ circuitry, layout, and exceptionally musical sound of the classic Pultec, the EM-PEQ offers fully balanced, noise-free performance and modern impedance specs for easy operation and fast studio integration.   \u003c\/p\u003e\r\n\u003cp\u003eIn the world of pro audio recording, there are two types of equalizers: those that you don’t want to hear in action (“surgical or corrective EQ), and those that you do (“color, or character” EQ). The EM-PEQ is one you most definitely do. Unlike any other 500-Series equalizer, the A-Designs EM-PEQ sits on the extreme end of the “character” bench. It focuses on “correcting” that which cannot be fixed by so-called surgical EQs: the enhancement of tone and musicality.   \u003c\/p\u003e\r\n\u003cp\u003eThe EM-PEQ is also available as the EM-EQ2, a 2-channel, 2U rack-mount version offered at the same price as two EM- PEQs and a 500HR power rack. Whether you prefer to work with the 500-Series form factor or standard rack-mount format, both the EM-PEQ and EM-EQ2 are identical in both sound quality and functionality.\u003c\/p\u003e","brand":"A Designs","offers":[{"title":"Default Title","offer_id":44449236353127,"sku":"8448","price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/a-designs-em-peq-500_8448_1.jpg?v=1787088254"},{"product_id":"speck-asc-v","title":"Speck ASC-V 500 Series 4-Band Parametric EQ","description":"\u003cspan style=\"font-style: italic;\"\u003eManufacturer's description:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eASC-V\u003c\/span\u003e is a professional single channel 4-band equalizer in a 5.25” vertical module compatible with API Audio® 500 series rack frames. It is simple... it is useful... and it delivers the high quality and specifications found in all Speck Electronics gear.\u003cbr\u003e\u003cbr\u003eThis compact 4-band parametric equalizer has 12 controls for equalization adjustment that covers the audio spectrum from a low 25Hz all the way up to 25kHz. To enhance the classic EQ experience, the ASC-V offers both transformer-balanced and active-balanced outputs.\u003cbr\u003e\u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e4 Sweepable Bands\u003c\/span\u003e:\u003cbr\u003e\u003cbr\u003eL Band - a low band that sweeps the low frequencies from 25Hz - 400Hz. This band offers a Peak\/Shelf select switch.\u003cbr\u003e\u003cbr\u003eL\/M Band - a switchable low and mid band. This fully parametric section can be switched between a low frequency band that sweeps from 40Hz - 800Hz, or a mid frequency band that sweeps 400Hz - 8kHz. This band has a variable bandwidth adjustment.\u003cbr\u003e\u003cbr\u003eM Band - a fully parametric mid band with a frequency sweep range from 400Hz to 10kHz.\u003cbr\u003e\u003cbr\u003eH Band - a high band that adjusts the high frequency from 2kHz all the way up to 25kHz. This band also offers a Peak\/Shelf select switch.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eThe Rear Panel:\u003c\/span\u003e\u003cbr\u003e \u003cbr\u003e In addition to the standard rack-friendly edge connector, the ASC-V has a set of 1\/4\" TRS input\/output jacks, and a power input connector. With these I\/O connectors and the optional power module, you can ignore the PC edge connector and use the ASC-V as a stand-alone EQ. We even offer a mounting base that will hold a single EQ or a pair of the ASC-V's.\u003cbr\u003e \u003cbr\u003e Connect the ASC-V to virtually any line level source; balanced, unbalanced, or mixer inserts. The ASC-V has high headroom that will handle balanced signals up to +28dBu.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\u003cli\u003eUnified 5.25\" vertical module format that is compatible with API Audio® racks\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUnique design allows module to be operated without rack. Can be self-powered and has 1\/4\" TRS I\/O jacks\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTransformer and active-balanced outputs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOptional base kit can hold 1 or 2 ASC-V’s for tabletop operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaptive mounting screws stay with the module and extend to pull the module out of the rack\u003c\/li\u003e\u003c\/ul\u003e","brand":"Speck Electronics","offers":[{"title":"Default Title","offer_id":44449236484199,"sku":"7710","price":890.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/speck_asc-v_1.jpg?v=1787088255"},{"product_id":"alta-moda-am-20-equalizer","title":"Alta Moda AM-20 Equalizer","description":"\u003cp\u003eThe \u003cstrong\u003eAlta Moda Audio AM-20\u003c\/strong\u003e is a high-performance, high fidelity four-band parametric equalizer module, designed for the API™ 500-series compatible rack systems. \u003cbr\u003e \u003cbr\u003e State-of-the-art amplifier technology coupled with simple and elegant signal paths assure a smooth and robust sonic presence. \u003cbr\u003e \u003cbr\u003e The four continuously variable and overlapping frequency bands give the AM-20 exceptional versatility for a wide range of audio applications.  The parametric center frequencies with continuously variable bandwidth adjustment offer the critical sonic and creative control needed for a wide variety of music styles and applications. \u003cbr\u003e \u003cbr\u003e \n\u003c\/p\u003e\u003cp\u003eControls\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh frequency – Shelving type, continuously 4kHz to 20kHz \u003c\/li\u003e\n\u003cli\u003eHigh-mid frequency – parametric, continuously 1kHz to 7.5kHz \u003c\/li\u003e\n\u003cli\u003eLow-Mid frequency – parametric, continuously 65Hz to 2kHz \u003c\/li\u003e\n\u003cli\u003eLow frequency – shelf or peak\/dip, continuously 20Hz to 120Hz \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Alta Moda","offers":[{"title":"Default Title","offer_id":44449236615271,"sku":"10861","price":599.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/alta_moda_am20.jpg?v=1787088256"},{"product_id":"electrodyne-511-equalizer","title":"Electrodyne 511 Equalizer","description":"\u003cp\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eElectrodyne 511\u003c\/span\u003e is a classic two-band, discrete transistor, reciprocal, active inductor-based equalizer using late-’60s\/early-’70s design technology.  As with the 501, the 511’s custom inductors and output transformer are made by Electrodyne’s original provider to strict factory tolerances as small as two percent.  This affords a consistent EQ performance and repeatability from channel to channel that was simply not possible in the 1960s.  Smooth performance and EQ response from minimum to maximum gain at all frequencies provides unusually broad sonic and tonal options not experienced since the 1970s. \u003cbr\u003e \u003cbr\u003e The module’s faceplate sports twin large rotary EQ controls each offering ±12dB of boost and cut with four selectable frequencies per band (LF: 40, 100, 250 and 500Hz \/ HF: 1.5, 3, 5 and 10kHz).  Shelving is available on all frequencies, with peaking offered at 250 and 500Hz in the LF band and 1.5, 3 and 5kHz in the HF band. An EQ in\/out switch with accompanying LED rounds out the front panel feature set.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput: active balanced discrete transistor impedance converter. \u003c\/li\u003e\n\u003cli\u003eOutput impedance: 150 ohms \u003c\/li\u003e\n\u003cli\u003e+\/-12 db gain range: equalize or attenuate \u003c\/li\u003e\n\u003cli\u003e4 frequencies selectable per band. LF: 40, 100, 250, 500hz. HF: 1.5k, 3k, 5k, 10k. \u003c\/li\u003e\n\u003cli\u003ePeak\/shelf function on each band. Shelving at all frequencies, peaking at 250, 500, 1.5k, 3k and 5k. \u003c\/li\u003e\n\u003cli\u003eDistortion: 0.03%typical. \u003c\/li\u003e\n\u003cli\u003eMaximum output: +30db at less than 0.8%thd. (+29.5db at 0.06%thd) \u003c\/li\u003e\n\u003cli\u003eFrequency response: +\/- 0.25db, 10hz to 70khz typical. \u003c\/li\u003e\n\u003cli\u003eSignal to noise: -85db typ.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Electrodyne","offers":[{"title":"Default Title","offer_id":44449236844647,"sku":"12711","price":1100.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/electrodyne_511_front.jpg?v=1787088257"},{"product_id":"inward-connections-nitro","title":"Inward Connections Nitro","description":"\u003cp\u003eWhen you need to perform minor surgery on a track, the Inward Connections \u003cstrong\u003eNitro\u003c\/strong\u003e is ready to scrub in. This fully discrete 500 Series module is a two-band parametric EQ, giving you the shaping tools to pull out problem frequencies or open up and make some room in the top end. With a simple, versatile design enhanced by a warmth-adding VF-600 amp block, Nitro is the perfect addition to any 500 Series lunchbox.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStraightforward two-band EQ does the job\u003c\/li\u003e\n\u003cli\u003eInward Connections: boutique gear handmade in LA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eStraightforward two-band EQ does the job\u003c\/strong\u003e\u003cbr\u003eThe Inward Connections Nitro wasn't designed for center stage work, but it's the perfect stage hand. This fully discrete two-band parametric EQ adds shaping power to your 500 Series rack. It's the perfect go-to when you want to remove problematic frequencies or create some space on the top end. Plus, thanks to the VF-600 amp block you get all the functionality with a subtle dose of warmth and power too. Bravo.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInward Connections: boutique gear handmade in LA\u003c\/strong\u003e\u003cbr\u003eInitially one of LA's best-kept secrets, the word about Inward Connections has been sweeping the globe. After all, when you hear guys like Chris Lord-Alge and Eddie Kramer swearing by a brand, you know to pay attention. Dreamed up and designed by Steve Firlotte, a well-known LA tech, the Inward Connections line offers premium options for the discerning ear, all meticulously handmade in Firlotte's Los Angeles workshop.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\n\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInput Impedance: \u0026gt;20K ohms balance\u003c\/li\u003e\n\u003cli\u003eOutput Impedance: 600 ohms balance\u003c\/li\u003e\n\u003cli\u003eFrequency Response: +\/- 0.5dB@20Hz to 50KHz\u003c\/li\u003e\n\u003cli\u003eOutput Signal to Noise: -95dB or greater\u003c\/li\u003e\n\u003cli\u003eTHD + Noise: .01%@1KHz\/+4dBu\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Inward Connections","offers":[{"title":"Default Title","offer_id":44449236910183,"sku":"17348","price":950.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/inward_connections_nitro.jpg?v=1787088258"},{"product_id":"buzz-audio-tonic","title":"Buzz Audio Tonic 500 Series 3-Band EQ","description":"\u003cp\u003eBefore modern semiconductor technology, audio filters and equalizers were made with passive components - capacitors and wound coils of wire that formed inductors (or chokes).  Audio frequency chokes were bulky and expensive so these days it's easier (and cheaper) to use an electronic circuit to simulate the inductors. However, we have discovered that the difference in sound between the real thing and a simulator is quite noticable.  So with the tonic equalizer we have brought you the best of both worlds, utilizing both real chokes and electronic filters in perfect harmony. \u003cbr\u003e\u003cbr\u003e The \u003cstrong\u003eBuzz Audio Tonic \u003c\/strong\u003eoffers three bands of equalisation with a versatile sweep midrange section and fixed two frequency high and low bands.  The tonic also has a high pass filter utilizing another real choke.  The signal path of the tonic is all True Class A discrete transistor with the output balanced via a Lundahl LL1517 high spec transformer. The tonic is designed to fit into the popular API 500 Series modular racks and requires a rack to function. \u003cbr\u003e\u003cbr\u003e The Tonic high band is switchable bell or shelf and features two frequency settings of 5kHz and 11kHz.  The low band is also switchable bell or shelf with two frequency setting at 120Hz and 60Hz with both bands providing +\/- 15dB of boost and cut.  Thanks to the use of passive choke based filters, users can expect a very tight sounding bottom end and sparkly clear highs when applying boost with these two bands. \u003cbr\u003e\u003cbr\u003e The sweep \"bell\" midrange extends from 75Hz to 1500Hz (x1 mode) or 750Hz to 15000Hz (x10 mode).  The midrange \"Q\" or bandwidth can be selected tight(ish) or broad and utilizes the Constant Amplitude Phase Shift (CAPS) filter circuit developed by Mr Steve Dove. +\/-15dB of midrange boost and cut is available. \u003cbr\u003e\u003cbr\u003e The Tonic 18dB\/oct high pass filter is completely passive with two turn over frequencies (50Hz or 90Hz) selected by the user via jumpers on the circuit board. Completing the picture is the \"OL\" LED which illuminates when levels exceed +20dBu and the \"BYP\" switch which completely removes the tonic from the signal path. \u003cbr\u003e\u003cbr\u003e \u003cstrong\u003eRack Compatibility\u003c\/strong\u003e\u003cbr\u003e The Tonic uses 1 rack space and draws 120mA +\/- 15-18 volts DC, as supplied by frame power supply. Power consumption is higher than most other 500 series modules and this may stress some rack power supplies depending on what other modules are fitted. Please check the following list to see if it will work OK in your rack.\u003cbr\u003e\u003cbr\u003e \u003cstrong\u003eAPI Lunchbox 6B\u003c\/strong\u003e - recommend only two tonic modules are fitted along with other modules.\u003cbr\u003e\u003cbr\u003e \u003cstrong\u003eAPI 500VPR with L200PS \u003c\/strong\u003e- no problems. \u003cstrong\u003eAtlas Pro Audio Revolver\u003c\/strong\u003e - no problems.\u003cbr\u003e\u003cbr\u003e \u003cstrong\u003eOSA Power Rack and Track Pack \u003c\/strong\u003e- no problems if you have the 3A external power supply.\u003cbr\u003e\u003cbr\u003e \u003cstrong\u003eB.A.E. 6 \u0026amp; 11 Slot Racks \u003c\/strong\u003e- not tested, check with B.A.E. for power capacity. \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Buzz Audio","offers":[{"title":"Default Title","offer_id":44449236975719,"sku":"9016","price":1015.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/buzz-audio-tonic_9016_1_6fe28150-dd1c-42c7-b85c-e518a5240a48.jpg?v=1787088258"},{"product_id":"chandler-limited-little-devil-equalizer","title":"Chandler Limited Little Devil EQ 500 Series 4-Band Parametric Equalizer","description":"\u003cp\u003eThe \u003cstrong\u003eChandler Limited Little Devil Equalizer\u003c\/strong\u003e has all discrete circuits with custom transformers, an inductor-based EQ that modern gyrator circuits can't touch, and a classic Baxendall tone control that is simply huge sounding! These units are all handmade using through-hole components and handwiring. Chandler Limited doesn't use surface mount components which, in their opinion, lowers the quality. Chandler's units are extremely high-quality made the way your favorite vintage units were made to preserve that special sound.\u003c\/p\u003e\r\n\r\n\u003cp\u003eChandler Limited furiously entered the 500 Series race with its new line of 500 Series Modules for your favorite lunch box! Using all discrete circuits that combine Chandler's best designs with the hottest designs from the past, transformer balanced everything, and the American handmade quality you expect from Chandler, the 500 Series Modules will take your lunchbox or rack system to the next level!\r\nThe Little Devil EQ is a small package with a huge sound. It is a Chandlerized British console sound in a 500 package.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_0\"\u003eCOMPATABILITY\u003c\/h3\u003e\r\n\r\n\u003cp\u003eAll Chandler 500 series units have now been tested and proven to have no power issues in the following racks: \u003c\/p\u003e\r\n\r\n\u003cul\u003e\r\n\u003cli\u003eAPI 500V 10-slot with L200 PSU\u003c\/li\u003e\r\n\u003cli\u003eAPI 500-6B Lunchbox\u003c\/li\u003e\r\n\u003cli\u003eAPI 500-6B HC Lunchbox\u003c\/li\u003e\r\n\u003cli\u003eBAE 11-slot with power one supply\u003c\/li\u003e\r\n\u003cli\u003eBAE 6-slot portable with power one supply\u003c\/li\u003e\r\n\u003cli\u003eBAE 6-slot with Avedis designed supply; A-Designs 2-slot\u003c\/li\u003e\r\n\u003cli\u003ePurple Sweet 10\u003c\/li\u003e\r\n\u003cli\u003eEmpirical Labs 2-slot\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Chandler Limited","offers":[{"title":"Default Title","offer_id":44449237041255,"sku":"10882","price":1335.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/chandler-little-devil-eq-24_10882_1_447ba683-8533-4dc8-b0a1-0d3ec0eb72a9.jpg?v=1787088258"},{"product_id":"purple-audio-lilpeqr-2-band-program-eq","title":"Purple Audio LILPEQr 500 Series 2-Band Program EQ","description":"\u003cp\u003eThe \u003cstrong\u003ePurple Audio LILPEQr\u003c\/strong\u003e emulates the colorful 3D richness and useful responses of our favorite vintage tube (aka valve) program EQs (namely, the Lang PEQ-1 and the Klangfilm RZ062), but in a compact, solid-state format. The LILPEQr and LILPEQr-M will add air, weight, and glue to an already balanced mix. Additionally you can also use the LILPEQr and LILPEQr-M to immediately and intuitively alter the overall tone of an individual source. The LILPEQr is our take on the classic program (aka final mix) equalizer. It offers high and low frequency shelving bands, each with three carefully selected corner frequencies to choose from, and a switchable fader knob for overall level control.\u003c\/p\u003e\r\n\r\n\u003cp\u003eWhen the EQ is first switched in (center switch position – “IN” – LED off) your signal is injected passively into the tone network, directly following the input transformer. As with many classic program equalizers, this configuration allows for the ultimate in wide, lush, mix-buss response with extra “glue” and all that richness.\u003c\/p\u003e\r\n\r\n\u003cp\u003eFlip the switch one more click (upper switch position – “IN+Level” – LED red) to activate the buffered “Level” control. Placed in between the input transformer and EQ network, these discrete, class A buffers change the response ever so slightly, making the signal seem a bit tighter and more focused. This mode is more useful on individual sources within a mix.\u003c\/p\u003e\r\n\r\n\u003cp\u003eRelay true bypass (lower switch position – “BYP” – LED green) allows for easy before and after EQ comparisons, and a simple overall circuit path allows for wide bandwidth so that everything passes through… sounding better! In program mode (“IN”), with both EQ knobs centered, frequency response is +\/- 0.5dBu from 20Hz to 20kHz, and extends below 10Hz and well beyond 120kHz before any drooping occurs.\u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e","brand":"Purple Audio","offers":[{"title":"Default Title","offer_id":44449237205095,"sku":"13186","price":675.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/purple_audio_lilpeqr_1.jpg?v=1787088259"},{"product_id":"purple-audio-odd","title":"Purple Audio Odd 500 Series 4-Band Inductor EQ","description":"The \u003cb\u003ePurple Audio Odd Equalizer\u003c\/b\u003e is a modern update of the classic \"swinging inputs\" console EQ, with four easy to use bands. Each band uses a high quality inductor and carefully selected caps to give two switchable frequencies. The bands are carefully shaped and spaced to be musical, even at full 12dB boost or cut. The highest band can also be switched from bell to shelf, to boost frequencies extending well beyond 20kHz. \u003cbr\u003e\u003cbr\u003e There are illuminated pushbuttons for additional fixed low (red) and high (yellow) cut filters. A relay true bypass (green) allows for easy comparison with unprocessed source material. With the low and high cut switched out, and all four bands set to 0, the frequency response is +\/- 0.25dB from 15Hz to 25kHz, and -3dB at 60kHz. Has the same input and output transformer as the Biz \u003cbr\u003e\u003cbr\u003e With specialized input and output transformers, the Odd has plenty of headroom, even at full boost. The entire circuit is discrete, with no electrolytic capacitors in the signal path, and no servo amps. 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Their products are superbly made and they are as fanatically supportive towards their customers as we are to our own.  We realized that we had an opportunity to launch a product that the world has been requesting, while continuing forward with our passion which is building large-format consoles.”\u003c\/p\u003e\r\n\r\n\u003cp\u003eLike all Great River and Harrison products, the 32EQ is designed and built in the USA.\u003c\/p\u003e","brand":"Great River Electronics","offers":[{"title":"Default Title","offer_id":44449237663847,"sku":"13142","price":775.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/great_river_harrison_32_eq_front.jpg?v=1787088261"},{"product_id":"api-550a","title":"API 550A 500 Series 3-Band Equalizer","description":"\u003cp\u003eReissued by popular demand, the \u003cstrong\u003eAPI 550A\u003c\/strong\u003e is a 500 Series 3-band equalizer that delivers legendary API tone in a compact format. With its classic discrete design, flexible controls, and versatile filter options, this legendary equalizer is an indispensible studio tool. Its timeless design, musical tone-shaping, and thoughtful features make it easy to shape the tone of any track in the studio or on stage.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_0\"\u003eLEGENDARY API SOUND\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThe API 550A embodies the renowned tonal signature that has defined countless hit recordings since the late 1960s. Its discrete circuitry and musical frequency settings capture the warmth, clarity, and punch that API Audio is known for. Designed to reproduce the magic of classic recordings, this workhorse EQ enriches every element of your mix. This iconic unit is the perfect way to add some vintage API magic to your studio.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_1\"\u003eREVIVING A CLASSIC EQUALIZER\u003c\/h3\u003e\r\n\r\n\u003cp\u003eAfter decades of customer demand, the API 550A discrete EQ was reissued in 2004. This revival stays true to its heritage, with every circuit meticulously recreated to deliver the sound that made it a studio staple. More than a reissue, this is a celebration of classic studio design. The popularity of the legendary 550A proves that true audio excellence never goes out of style.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_2\"\u003e3 BANDS OF SIGNATURE API EQUALIZATION\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThe API 550A features three versatile EQ bands, each with seven selectable frequencies carefully chosen for maximum musicality. This simple but thoughtful design offers unparalleled flexibility for precise tone-shaping. Each band provides +\/- 12 dB adjustments, and the detented concentric knobs make recalling settings easy. From subtle tonal shifts to dramatic boosts and cuts, these three bands provide endless tonal options.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_3\"\u003ePRISTINE SIGNAL INTEGRITY\u003c\/h3\u003e\r\n\r\n\u003cp\u003eEngineered for high headroom and low noise performance, the API 550A preserves the full dynamic range of your source without compromising clarity. Every circuit is meticulously calibrated to minimize unwanted noise and coloration—even when pushing for maximum gain. This uncompromised signal integrity empowers you to make bold, precise adjustments, confident that the true character of your audio will shine through every mix.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_4\"\u003eTHE API LEGACY\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThe API Audio name is synonymous with bold sound, innovative design, and reliability. The legacy of API began in the late 1960s when their unique products set new standards of sound quality in studios worldwide, and the brand has been revered by top engineers for decades. 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Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 op-amp), the 550B artfully blends the past with the present.  So many hit records still depend on the unique 550 sound, that the 550B will be an invaluable tool you will turn to again and again.  The API 550B—unlike any other you will ever use.\u003c\/p\u003e\r\n\u003cp\u003eMany EQs today offer a huge assortment of complex features, but the API 550B provides exactly the right number of controls to the professional engineer.  Deceptively simple at first glance, the 550B's four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device.  Each band offers seven switchable filter frequencies spanning four to five octaves, selected through experience by a \"who's who\" list of the industry's most proficient engineers.  This re-issue design has been taken from the original blueprints and spec control drawings from the API archives.\u003c\/p\u003e\r\n\u003cp\u003eMaking use of \"API Proportional-Q\", a design introduced by API in the 60's, the 550B intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings—without the need for additional bandwidth controls.  This feature minimizes the \"phase-shift\" sound found in many equalizers.  The reciprocal nature of the 550B enables the user to \"undo\" what has been done previously.\u003c\/p\u003e\r\n\u003cp\u003eThe benefits of the API 550B are most obvious to those who work with EQ on a continuous basis.  The 550B's ability to affect or reverse tonal modifications is perhaps the most important feature.  If major tonal restructuring is required, the extraordinary headroom made possible with API's 2520 op-amp offers predictable and gentle \"analog\" performance under duress.  With a surprisingly wide range of tonal variations, you can do no better than the API 550B.\u003c\/p\u003e\r\n\r\n\u003cp\u003e \u003c\/p\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449238122599,"sku":"781","price":1295.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/api_550b_front.jpg?v=1787088263"},{"product_id":"api-560a-used","title":"API 560a (Used)","description":"Vintage Avedis modfied 70s issue graphic EQ, predecessor to the 560B and 560 now available. 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Based on API's original 560 EQ, the current production 560 has improved resolution in the ±4 dB area and possesses our exclusive circuitry and proprietary components, including the API 2520 Op Amp.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThe extraordinary headroom made possible with the 2520 offers consistent analog performance even when using radical EQ curves. Of course, the 2520's ability to drive low impedance loads is key when it is paired with API's custom output transformers. The results are quite audible with better low frequency reproduction and tighter imaging, which gives you that legendary API \"punch in your gut\" sound.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThe 10 precision EQ bands make the 560 ideal for signal sweetening and room tuning. A great companion to a parametric EQ, the 560 utilizes API's unique \"Proportional Q\" design introduced during the '60s. This design intuitively widens the filter bandwidth at lower boost\/cut levels and narrows it at higher settings. 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However, when I heard it on kick drum and bass, it became clear this would be the go to device to make these instruments sound huge.\u003cbr\u003e\u003cbr\u003eThe VOG lets users sweep a sharp peak resonance from 20 to 300 Hz, while anything below the peak is rolled off at a steep -24dB per octave. This lets users focus on the low end they want, while eliminating low-end mush and unnecessary woofer excursion.\u003cbr\u003e\u003cbr\u003eA subharmonic can be the focus, or the fundamental, or upper harmonics. On a kick drum, for example, the overall effect of turning VOGs frequency knob sounds like someone is tightening or loosening the drumhead. 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Finally, after much research and development, A-Designs Audio announces that it has managed to capture much of the essence of the famed EQ in a new product – and one that fits in a compact 500-series module frame size, no less! \u003cbr\u003e\u003cbr\u003e Dubbed the \u003cb\u003eEM-PEQ\u003c\/b\u003e, A-Designs Audio was able to ‘shrink’ this highly sought after filter design into the now red-hot 500-series format without compromise to either build quality or sonics. The EQ section design and control layout of the classic EQP-1A has been meticulously maintained, as well as its wonderfully smooth musicality. \u003cbr\u003e\u003cbr\u003e Makeup amplification is achieved through the use of the same discrete Class AB amplifier found in A-Designs Audio’s popular solid-state Pacifica mic pre, putting a slightly unique twist on the classic design of yesteryear. \u003cbr\u003e\u003cbr\u003e Additional features include a nickel core output transformer, gold Grayhill rotary switches, Wima caps, and a true hard bypass. Instead of using common off-the-shelf chokes, A-Designs uses a custom-wound tapped inductor wound to the original values. Fully balanced, noise-free operation with modern impedance specs make for dummy-proof operation and fast studio integration. \u003cbr\u003e\u003cbr\u003e The new EM-PEQ is an approved API™ ‘VPR Alliance’ product and may also be used in Brent Averill Enterprises racks and A-Designs Audio’s R52, manufactured by Avedis Audio Electronics. \u003cbr\u003e\u003cbr\u003e \u003cb\u003eCheck out these Quicktime Movies to SEE and HEAR A-Designs in action!\u003c\/b\u003e\u003cbr\u003e \u003ci\u003eRight click to save\u003c\/i\u003e\u003cbr\u003e\u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/RCM_Sax.mov\" target=\"blank\"\u003eRecording Saxophone with A-Designs Pacifica and EM-PEQ\u003c\/a\u003e \u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/RCM_Piano.mov\" target=\"blank\"\u003eRecording Piano with A-Designs Pacifica and EM-PEQ\u003c\/a\u003e \u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/Dylan_AcousticGuitar.mov\" target=\"blank\"\u003eRecording Acoustic Guitar with A-Designs Blue and Hammer\u003c\/a\u003e \u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/RCM_MaleVox.mov\" target=\"blank\"\u003eRecording Male Vocals with A-Designs Pacifica\u003c\/a\u003e \u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/RCM_FemaleVox.mov\" target=\"blank\"\u003eRecording Female Vocals with A-Designs Hammer\u003c\/a\u003e \u003cbr\u003e \u003ca href=\"http:\/\/techbreakfast.com\/SoundCity\/ADesigns_finalwebs\/Dylan_JCM800.mov\" target=\"blank\"\u003eRecording Electric Guitar with A-Designs Hammer\u003c\/a\u003e","brand":"A Designs","offers":[{"title":"Default Title","offer_id":44449359724647,"sku":"13895","price":955.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/a_designs_empeq_1_1.jpg?v=1787088701"},{"product_id":"api-550a-demo-deal","title":"API 550A (Demo Deal)","description":"Few equalizers enjoy the respect and admiration of the coveted \u003cb\u003eAPI 550A\u003c\/b\u003e. Designed by the now legendary Saul Walker in the late 60's, the discrete 550A was first used as a modular OEM equalizer. As the industry rapidly embraced the sonic quality of the 550A, it quickly found its way into many custom console designs by Frank DeMedio and other leading engineers. Many of these consoles are still in use today. \u003cbr\u003e\u003cbr\u003eForty years later, the 550A remains the standard against which other EQs are measured, and it has played a major role in the recording industry for decades. Still copied but never duplicated, the 550A became API's standard channel module EQ when the company began manufacturing consoles in 1971. With virtually all existing units spoken for, popular demand for this EQ resulted in API finally resuming production in 2004. \u003cbr\u003e\u003cbr\u003eThe 550A provides reciprocal equalization at 15 points in 5 steps of boost to a maximum of 12dB of gain at each point. The fifteen equalization points are divided into three overlapping ranges. The high and low frequency ranges are individually selectable as either peaking or shelving, and a band-pass filter may be inserted independently of all other selected equalization settings. Frequency ranges and boost\/cut are selected by three dual-concentric switches and a push-button \"in\" switch allows the EQ to be silently inserted into the signal path. A small toggle switch is used to engage the band-pass filter.\u003cbr\u003e\u003cbr\u003eThe combination of Walker's incomparable 2520 op-amp, and his \"Proportional Q\" circuitry gives the 550A user an uncomplicated way to generate acoustically superior equalization. \u003cbr\u003e\u003cbr\u003eWith the long-awaited reissue of this unit, an EQ that has had such a part in the history of recording is continuing to make history in today's music. \u003cbr\u003e\u003cbr\u003e \u003capi_warranty\u003e\u003c\/api_warranty\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449360314471,"sku":"13899","price":1069.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/api_550a_4.jpg?v=1787088703"},{"product_id":"api-550b-demo-deal","title":"API 550B (Demo Deal)","description":"The \u003cb\u003eAPI 550 discrete 4-band EQ\u003c\/b\u003e played a major part in the history of music recording in the USA during the 60's and 70's. Originally conceived for use in API's consoles, this latest 550 \"B\" version is a continuation of the original 1967 550 through the 550A with one additional filter band and several new frequencies. Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 op-amp), the 550B artfully blends the past with the present. So many hit records still depend on the unique 550 sound, that the 550B will be an invaluable tool you will turn to again and again. The API 550B—unlike any other you will ever use. \u003cp\u003eMany EQs today offer a huge assortment of complex features, but the API 550B provides exactly the right number of controls to the professional engineer. Deceptively simple at first glance, the 550B's four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device. Each band offers 7 switchable filter frequencies spanning 4 to 5 octaves, selected through experience by a \"who's who\" list of the industry's most proficient engineers. This re-issue design has been taken from the original blueprints and spec control drawings from the API archives.\u003c\/p\u003e \u003cp\u003eMaking use of \"API Proportional-Q\", a design introduced by API in the 60's, the 550B intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings—without the need for additional bandwidth controls. This feature minimizes the \"phase-shift\" sound found in many equalizers. The reciprocal nature of the 550B enables the user to \"undo\" what has been done previously.\u003c\/p\u003e \u003cp\u003eThe benefits of the API 550B are most obvious to those who work with EQ on a continuous basis. The 550B's ability to affect or reverse tonal modifications is perhaps the most important feature. If major tonal restructuring is required, the extraordinary headroom made possible with API's 2520 op-amp offers predictable and gentle \"analog\" performance under duress. With a surprisingly wide range of tonal variations, you can do no better than the API 550B.\u003c\/p\u003e  \u003capi_warranty\u003e\u003c\/api_warranty\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449360347239,"sku":"15735","price":1166.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/api_550b_cat_1.jpg?v=1787088703"},{"product_id":"api-560-demo-deal","title":"API 560 (Demo Deal)","description":"The \u003cb\u003eAPI 560\u003c\/b\u003e was originally conceived for use in API consoles of the 60's and 70's. The API 560 re-issue is a unique device designed to accomplish tasks that no other EQ can do. It delivers that \"one-of-a-kind\" API sound, precision easy-set filtering and high headroom in a very small package. Extremely fast to set and reset using accurate zero detents, the curve-shaping potential of the 560 is unmatched. At home both in field recording and the studio environment, this \"new-old\" version is a re-issue of the original 560 with improved resolution in the critical area of ±4 dB. Incorporating API's exclusive circuitry and proprietary components (such as the legendary 2520 op-amp), the re-issue of the 560 artfully blends the past with present—layout with function. \u003cp\u003e\u003c\/p\u003e \u003cp\u003eThe API 560 was created to fit all applications for the professional engineer. For most of the 70's and 80's, every remote recording console that API manufactured used this versatile graphic EQ. It is also ideal for studio and live sound applications, where a professional result is required. This re-issue design has been taken from the original blueprints and spec control drawings from the API archives.\u003c\/p\u003e \u003cp\u003eThe large number of available EQ bands makes the 560 an ideal companion to parametric EQ, as well as ideal for signal sweetening and room tuning. Not lacking in features, the 560 makes use of API's unique \"Proportional Q\" design introduced by API in the 60's, intuitively widening the filter bandwidth at lower boost\/cut levels and narrowing it at higher settings. In addition, boost and cut characteristics are identical, so previous actions can be undone.\u003c\/p\u003e \u003cp\u003eThe extraordinary headroom made possible with API's proprietary 2520 op-amp offers predictable and wonderful \"analog\" performance under duress. With a wider range of 500-series mounting options, the 560 will be a valuable asset to your performance-critical applications.\u003c\/p\u003e \u003cp\u003eThe 560 Graphic Equalizer makes use of the 2510 and 2520 op-amps and therefore exhibits the reliability, long life and uniformity which are characteristic of API products.\u003c\/p\u003e  \u003capi_warranty\u003e\u003c\/api_warranty\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449360412775,"sku":"14091","price":879.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/api_560_3.jpg?v=1787088704"},{"product_id":"buzz-audio-tonic-demo-deal","title":"Buzz Audio Tonic (Demo Deal)","description":"Before modern semiconductor technology, audio filters and equalizers were made with passive components - capacitors and wound coils of wire that formed inductors (or chokes). Audio frequency chokes were bulky and expensive so these days it's easier (and cheaper) to use an electronic circuit to simulate the inductors. However, we have discovered that the difference in sound between the real thing and a simulator is quite noticeable. So with the tonic equalizer we have brought you the best of both worlds, utilizing both real chokes and electronic filters in perfect harmony. \u003cbr\u003e\u003cbr\u003e The \u003cb\u003eBuzz Audio Tonic \u003c\/b\u003eoffers 3 bands of equalization with a versatile sweep midrange section and fixed two frequency high and low bands. The tonic also has a high pass filter utilizing another real choke. The signal path of the tonic is all True Class A discrete transistor with the output balanced via a Lundahl* LL1517 high spec transformer. The tonic is designed to fit into the popular API* 500 Series modular racks and requires a rack to function. \u003cbr\u003e\u003cbr\u003e The Tonic high band is switchable bell or shelf and features two frequency settings of 5kHz and 11kHz. The low band is also switchable bell or shelf with two frequency setting at 120Hz and 60Hz with both bands providing +\/- 15dB of boost and cut. Thanks to the use of passive choke based filters, users can expect a very tight sounding bottom end and sparkly clear highs when applying boost with these two bands. \u003cbr\u003e\u003cbr\u003e The sweep \"bell\" midrange extends from 75Hz to 1500Hz (x1 mode) or 750Hz to 15000Hz (x10 mode). The midrange \"Q\" or bandwidth can be selected tight(ish) or broad and utilizes the Constant Amplitude Phase Shift (CAPS) filter circuit developed by Mr Steve Dove. +\/-15dB of midrange boost and cut is available. \u003cbr\u003e\u003cbr\u003e The Tonic 18dB\/oct high pass filter is completely passive with two turn over frequencies (50Hz or 90Hz) selected by the user via jumpers on the circuit board. Completing the picture is the \"OL\" LED which illuminates when levels exceed +20dBu and the \"BYP\" switch which completely removes the tonic from the signal path. \u003cbr\u003e\u003cbr\u003e \u003cb\u003eRack Compatibility\u003c\/b\u003e\u003cbr\u003e The Tonic uses 1 rack space and draws 120mA +\/- 15-18 volts DC, as supplied by frame power supply. Power consumption is higher than most other 500 series modules and this may stress some rack power supplies depending on what other modules are fitted. Please check the following list to see if it will work OK in your rack.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eAPI Lunchbox 6B\u003c\/b\u003e - recommend only two tonic modules are fitted along with other modules.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eAPI 500VPR with L200PS \u003c\/b\u003e- no problems. \u003cb\u003eAtlas Pro Audio Revolver\u003c\/b\u003e - no problems.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eOSA Power Rack and Track Pack \u003c\/b\u003e- no problems if you have the 3A external power supply.\u003cbr\u003e\u003cbr\u003e \u003cb\u003eB.A.E. 6 \u0026amp; 11 Slot Racks \u003c\/b\u003e- not tested, check with B.A.E. for power capacity. \u003cbr\u003e\u003cbr\u003e \u003cb\u003eFeatures:\u003c\/b\u003e\u003cul\u003e \u003cli\u003e API* 500VPR Series rack module format - plug in and play! \u003c\/li\u003e\n\u003cli\u003eReal choke based EQ offering superior sonics. \u003c\/li\u003e\n\u003cli\u003e Advanced analogue technology - not a clone or copy of products from the past. \u003c\/li\u003e\n\u003cli\u003e Fully discrete hi-bias wide bandwidth differential Class A amplifiers. \u003c\/li\u003e\n\u003cli\u003e High performance Lundahl* output transformer.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Buzz Audio","offers":[{"title":"Default Title","offer_id":44449361756263,"sku":"13913","price":664.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/buzz_audio_tonic_1.jpg?v=1787088709"},{"product_id":"chandler-limited-little-devil-equalizer-demo-deal","title":"Chandler Limited Little Devil Equalizer (Demo Deal)","description":"Following in the rich tradition of English 60s and 70s console design, Chandler Limited enters the 500 race furiously with its new \u003cb\u003eLittle Devil Equalizers and Compressors\u003c\/b\u003e. \u003cbr\u003e\u003cbr\u003e With all discrete circuits, transformer balanced everything, and the American hand made quality you expect from Chandler the Devils combine Chandler’s best designs with the hottest designs from the past. \u003cbr\u003e\u003cbr\u003e","brand":"Chandler Limited","offers":[{"title":"Default Title","offer_id":44449361920103,"sku":"13974","price":1201.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/chandler_little_devil_eq_1_1.jpg?v=1787088710"},{"product_id":"electrodyne-511-equalizer-demo-deal","title":"Electrodyne 511 Equalizer (Demo Deal)","description":"\u003cp\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eElectrodyne 511\u003c\/span\u003e is a classic two-band, discrete transistor, reciprocal, active inductor-based equalizer using late-’60s\/early-’70s design technology. As with the 501, the 511’s custom inductors and output transformer are made by Electrodyne’s original provider to strict factory tolerances as small as two percent. This affords a consistent EQ performance and repeatability from channel to channel that was simply not possible in the 1960s. Smooth performance and EQ response from minimum to maximum gain at all frequencies provides unusually broad sonic and tonal options not experienced since the 1970s. \u003cbr\u003e \u003cbr\u003e The module’s faceplate sports twin large rotary EQ controls each offering ±12dB of boost and cut with four selectable frequencies per band (LF: 40, 100, 250 and 500Hz \/ HF: 1.5, 3, 5 and 10kHz). Shelving is available on all frequencies, with peaking offered at 250 and 500Hz in the LF band and 1.5, 3 and 5kHz in the HF band. An EQ in\/out switch with accompanying LED rounds out the front panel feature set.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eInput: Active balanced discrete transistor impedance converter. \u003c\/li\u003e\r\n\u003cli\u003eOutput impedance: 150 ohms \u003c\/li\u003e\r\n\u003cli\u003e+\/-12 db gain range: Equalize or Attenuate \u003c\/li\u003e\r\n\u003cli\u003e4 frequencies selectable per band. LF: 40, 100, 250, 500hz. HF: 1.5k, 3k, 5k, 10k. \u003c\/li\u003e\r\n\u003cli\u003ePeak\/Shelf function on each band. Shelving at all frequencies, Peaking at 250, 500, 1.5k, 3k and 5k. \u003c\/li\u003e\r\n\u003cli\u003eDistortion: 0.03%typical. \u003c\/li\u003e\r\n\u003cli\u003eMaximum output: +30db at less than 0.8%thd. (+29.5db at 0.06%thd) \u003c\/li\u003e\r\n\u003cli\u003eFrequency response: +\/- 0.25db, 10hz to 70khz typical. \u003c\/li\u003e\r\n\u003cli\u003eSignal to noise: -85db typ.\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Electrodyne","offers":[{"title":"Default Title","offer_id":44449362509927,"sku":"15047","price":929.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/electrodyne_511_1.jpg?v=1787088712"},{"product_id":"purple-audio-odd-4-band-inductor-eq4-demo-deal","title":"Purple Audio Odd 4 Band Inductor EQ4 (Demo Deal)","description":"The \u003cb\u003ePurple Audio Odd Equalizer\u003c\/b\u003e is a modern update of the classic \"swinging inputs\" console EQ, with four easy to use bands. Each band uses a high quality inductor and carefully selected caps to give two switchable frequencies. The bands are carefully shaped and spaced to be musical, even at full 12dB boost or cut. The highest band can also be switched from bell to shelf, to boost frequencies extending well beyond 20kHz. \u003cbr\u003e\u003cbr\u003e There are illuminated pushbuttons for additional fixed low (red) and high (yellow) cut filters. A relay true bypass (green) allows for easy comparison with unprocessed source material. With the low and high cut switched out, and all four bands set to 0, the frequency response is +\/- 0.25dB from 15Hz to 25kHz, and -3dB at 60kHz. Has the same input and output transformer as the Biz \u003cbr\u003e\u003cbr\u003e With specialized input and output transformers, the Odd has plenty of headroom, even at full boost. The entire circuit is discrete, with no electrolytic capacitors in the signal path, and no servo amps. With only two active stages, the current draw is low enough to work in any rack, and leave plenty of juice for other modules. \u003cbr\u003e\u003cbr\u003e \u003cb\u003eSpecifications:\u003c\/b\u003e\u003cul\u003e \u003cli\u003eHigh Frequecy Peak\/Bell 12kHz\/8kHz \u003c\/li\u003e\n\u003cli\u003eHigh Mid Frequency 4Khz\/1k8kHz \u003c\/li\u003e\n\u003cli\u003eLow Mid Frequency 650Hz\/300Hz \u003c\/li\u003e\n\u003cli\u003eLow Frequency 150Hz\/75Hz \u003c\/li\u003e\n\u003cli\u003eLow Cut 50 Hz \u003c\/li\u003e\n\u003cli\u003eHigh Cut 12kHz\u003c\/li\u003e\n\u003c\/ul\u003e Designed by Ed Anderson for Purple Audio","brand":"Purple Audio","offers":[{"title":"Default Title","offer_id":44449366343783,"sku":"13950","price":599.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/purple-odd-4-23_13950_1_1.jpg?v=1787088728"},{"product_id":"purple-audio-tav-10-band-inductor-eq-demo-deal","title":"Purple Audio TAV 10 Band Inductor EQ (Demo Deal)","description":"The \u003cspan style=\"font-weight: bold;\"\u003ePurple Audio TAV 10 Band Inductor EQ\u003c\/span\u003e is a new take on the console graphic, with ten easy to use bands. Each band uses a high quality inductor and carefully selected caps to set the center frequency. At full boost and full cut the bands are narrow enough to still be useful individually, but at lower settings the bands widen out for more gentle shaping. Even at full boost and cut, the filters are shaped to be musical and useful. \u003cbr\u003e\u003cbr\u003e An illuminated push button for relay true bypass (green) allows for easy comparison with unprocessed source material. A Tricolor LED meters the signal. With the low and high cut switched out, and all four bands set to 0, the frequency response is +\/- 0.25dB from 15Hz to 25kHz, and -3dB at 60kHz. \u003cbr\u003e\u003cbr\u003e With specialized input and output transformers, the TAV has plenty of headroom, even at full boost. The entire circuit is discrete, with no electrolytic capacitors in the signal path, and no servo amps. With only two active stages, the current draw is low enough to work in any rack, and leave plenty of juice for other modules. \u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e Features:\u003c\/span\u003e \u003cul\u003e \u003cli\u003eEach band boost or cut by 12dB \u003c\/li\u003e\n\u003cli\u003eRelay True Bypass \u003c\/li\u003e\n\u003cli\u003eTricolor LED level meter \u003c\/li\u003e\n\u003cli\u003eTransformer balanced in and out \u003c\/li\u003e\n\u003cli\u003eDiscrete signal path \u003c\/li\u003e\n\u003cli\u003eNo electrolytic caps in signal path \u003c\/li\u003e\n\u003cli\u003eCurrent consumption: 60mA \u003c\/li\u003e\n\u003cli\u003eOver Current Resettable Fused (prevents any module problem from affecting your rack) \u003c\/li\u003e\n\u003cli\u003eROHS - Lead Free \u003c\/li\u003e\n\u003c\/ul\u003e For easy serviceability and tweaking, the Purple discrete opamps can be replaced with any standard discrete opamp or a DIP-8 IC. \u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e Tav Pinout \u003c\/span\u003e\u003cul\u003e \u003cli\u003ePin 1: Chassis Ground \u003c\/li\u003e\n\u003cli\u003ePin 2: Output A + \u003c\/li\u003e\n\u003cli\u003ePin 3: NC \u003c\/li\u003e\n\u003cli\u003ePin 4: Output A - \u003c\/li\u003e\n\u003cli\u003ePin 5: Audio Ground \u003c\/li\u003e\n\u003cli\u003ePin 6: NC \u003c\/li\u003e\n\u003cli\u003ePin 7: Input - \u003c\/li\u003e\n\u003cli\u003ePin 8: Input - \u003c\/li\u003e\n\u003cli\u003ePin 9: Input + \u003c\/li\u003e\n\u003cli\u003ePin 10: Input + \u003c\/li\u003e\n\u003cli\u003ePin 11: NC \u003c\/li\u003e\n\u003cli\u003ePin 12: +15 or 16VDC 60ma \u003c\/li\u003e\n\u003cli\u003ePin 13: Audio Ground \u003c\/li\u003e\n\u003cli\u003ePin 14: -15 or 16VDC 60ma \u003c\/li\u003e\n\u003cli\u003ePin 15: NC (+48VDC) \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Purple Audio","offers":[{"title":"Default Title","offer_id":44449366409319,"sku":"15279","price":658.75,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/purple_audio_tav10_1_1.jpg?v=1787088728"},{"product_id":"speck-asc-v-1","title":"Speck ASC-V (Demo Deal)","description":"\u003cspan style=\"font-style: italic;\"\u003eManufacturer's description:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eASC-V\u003c\/span\u003e is a professional single channel 4-band equalizer in a 5.25” vertical module compatible with API Audio® 500 series rack frames. It is simple... it is useful... and it delivers the high quality and specifications found in all Speck Electronics gear.\u003cbr\u003e\u003cbr\u003eThis compact 4-band parametric equalizer has 12 controls for equalization adjustment that covers the audio spectrum from a low 25Hz all the way up to 25kHz. To enhance the classic EQ experience, the ASC-V offers both transformer-balanced and active-balanced outputs.\u003cbr\u003e\u003cbr\u003e\u003cbr style=\"font-weight: bold;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e4 Sweepable Bands\u003c\/span\u003e:\u003cbr\u003e\u003cbr\u003eL Band - a low band that sweeps the low frequencies from 25Hz - 400Hz. This band offers a Peak\/Shelf select switch.\u003cbr\u003e\u003cbr\u003eL\/M Band - a switchable low and mid band. This fully parametric section can be switched between a low frequency band that sweeps from 40Hz - 800Hz, or a mid frequency band that sweeps 400Hz - 8kHz. This band has a variable bandwidth adjustment.\u003cbr\u003e\u003cbr\u003eM Band - a fully parametric mid band with a frequency sweep range from 400Hz to 10kHz.\u003cbr\u003e\u003cbr\u003eH Band - a high band that adjusts the high frequency from 2kHz all the way up to 25kHz. This band also offers a Peak\/Shelf select switch.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eThe Rear Panel:\u003c\/span\u003e\u003cbr\u003e \u003cbr\u003e In addition to the standard rack-friendly edge connector, the ASC-V has a set of 1\/4\" TRS input\/output jacks, and a power input connector. With these I\/O connectors and the optional power module, you can ignore the PC edge connector and use the ASC-V as a stand-alone EQ. We even offer a mounting base that will hold a single EQ or a pair of the ASC-V's.\u003cbr\u003e \u003cbr\u003e Connect the ASC-V to virtually any line level source; balanced, unbalanced, or mixer inserts. The ASC-V has high headroom that will handle balanced signals up to +28dBu.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\u003cli\u003eUnified 5.25\" vertical module format that is compatible with API Audio® racks\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUnique design allows module to be operated without rack. Can be self-powered and has 1\/4\" TRS I\/O jacks\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTransformer and active-balanced outputs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOptional base kit can hold 1 or 2 ASC-V’s for tabletop operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCaptive mounting screws stay with the module and extend to pull the module out of the rack\u003c\/li\u003e\u003c\/ul\u003e","brand":"Speck Electronics","offers":[{"title":"Default Title","offer_id":44449367162983,"sku":"13957","price":595.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/speck_asc-v_1_1.jpg?v=1787088732"},{"product_id":"neve-1073lbeq","title":"Neve 1073LBEQ 500 Series Equalizer","description":"\u003cp\u003eThe \u003cstrong\u003eNeve 1073LBEQ\u003c\/strong\u003e captures the iconic sound of the original Neve 1073 EQ circuit in a compact 500-series module. With three bands of big, punchy EQ, the 1073LBEQ instantly adds a familiar lush sound to any recording. When partnered with the Neve 1073LB preamp, these two devices perfectly recreate the sound of the world’s most famous preamp right in your lunch box.\u003c\/p\u003e\r\n\r\n\u003ch3\u003eTHE SOUND OF YOUR FAVORITE RECORDS\u003c\/h3\u003e\r\n\r\n\u003cp\u003eEver since its release in 1970, the Neve 1073 has been the go-to preamp and EQ combo for engineers, producers and musicians in search of that classic analog sound. From pop to rock to hip-hop and more, the iconic sound of the Neve 1073 can be heard on countless hit records over the last 50 years. Ideal for adding warmth and depth to vocals, guitars, and acoustic instruments of all kinds, the 1073LBEQ is the perfect solution for audio professionals looking for a compact, versatile EQ with a classic sound.\u003c\/p\u003e\r\n\r\n\u003ch3\u003eCLASSIC CONTROLS\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThe Neve 1073LBEQ features the same EQ design as the original preamp model. The high shelf EQ is fixed at 12 kHz, and ideal for bringing acoustic recordings to life with a silky-smooth brilliance. The midband is perfect for carving out space in busy mixes and adding warmth and grit to instruments with fixed frequencies at 360 Hz, 700 Hz, 1.6 kHz, 3.2 kHz, 4.8 kHz and 7.2 kHz. The low band is perfect for fattening up tracks with tight, punchy lows using fixed frequencies at 35 Hz, 60 Hz, 110 Hz, and 220 Hz. Clean up your low end with a dedicated high-pass filter, selectable at 50 Hz, 80 Hz, 160 Hz and 300 Hz.\u003c\/p\u003e\r\n\r\n\u003ch3\u003eALL NEW FEATURES\u003c\/h3\u003e\r\n\r\n\u003cp\u003eThe new 1073LBEQ is equipped with a signal presence LED and Neve’s innovative Audio Processing Insert design. The 1073LBEQ can be modified to work as an insert when paired with an 1073LB mic preamp module. With a simple modification and an included cable, you can connect the 1073LBEQ to the 1073LB for a traditional preamp, EQ, output signal path.\u003c\/p\u003e\r\n\r\n\r\n\r\n\r\n\u003cp\u003eThe 1073LBEQ provides the legendary sound of Neve in a remarkably simple format. A Line level input feeds an electronically balanced EQ circuit with 3-bands of adjustable EQ and a High Pass filter, which can easily be switched in\/out. The output is also an electronically balanced Line level output. A signal presence LED and Neve’s clever Audio Processing Insert design is also integrated into the module.\u003c\/p\u003e\r\n\r\n\u003cp\u003eThe 1073LBEQ can be modified to work as an inserted process with an existing 1073LB mic pre module. A modification is required inside both units and a cable, which is supplied with the 1073LBEQ module, is needed to connect the LB mic pre to the LB EQ. The result of this is a genuine 1073 mic\/pre input -\u0026gt; EQ -\u0026gt; output audio path when in this mode. Revolutionary!\u003c\/p\u003e\r\n\r\n\u003cp\u003eThis mono unit is the perfect solution for studios and audio engineers looking to bring in the very essence of the Neve 1073 EQ sound to their portable racks.\u003c\/p\u003e\r\n\r\n\u003cp\u003e\u003cem\u003eNote: The Neve 1073LBEQ will not work with the A Designs 500HR 2 Slot rack or the Empirical Labs EL500 2 Slot 500 Series Rack.\u003c\/em\u003e\u003c\/p\u003e","brand":"Neve","offers":[{"title":"Default Title","offer_id":44449369129063,"sku":"17438","price":1235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/neve-1073lbeq_17438_1_1.jpg?v=1787088740"},{"product_id":"maag-audio-eq4","title":"Maag Audio EQ4-500 500 Series 6-Band Equalizer","description":"\u003cp\u003eBased on the acclaimed EQ4M mastering equalizer, the \u003cstrong\u003eMaag Audio EQ4-500\u003c\/strong\u003e introduces key enhancements. The front panel features bold new labeling and an updated visual layout with an iconic Maag Audio blue faceplate, designed to improve visibility in studio environments. Increased spacing between the frequency knobs improves ergonomics, allowing for easier and more precise control, especially during fast-paced sessions. The module also includes a true hardwire bypass circuit, identical to the one found in the EQ4M, ensuring complete signal transparency when the EQ is disengaged.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_0\"\u003e6 EQ BANDS\u003c\/h3\u003e\r\n\r\n\u003cp\u003eLike the 1U standalone EQ4M, the EQ4-500 includes six EQ band sections: four fixed-frequency bell-shaped peaking bands, a 2.5 kHz shelving band, and the renowned Air Band, with selectable frequencies at Off, 2.5, 5, 10, 15, 20, and 40 kHz. The five main frequency bands (Sub at 10 Hz, 40 Hz, 160 Hz, 650 Hz, and 2.5 kHz) offer up to ±15 dB of boost and as much as -4.5 dB of cut, with center detents at 0 dB for quick recall. The Air Gain control provides up to +20 dB of boost in the high-frequency shelf.\u003c\/p\u003e\r\n\r\n\u003ch3 id=\"toc_1\"\u003eTHE ULTIMATE EQ FOR YOUR 500 SERIES RACK\u003c\/h3\u003e\r\n\r\n\u003cp\u003eAdditional features include a green signal-present LED that activates at -20 dBu and a red peak LED that illuminates at +23 dBu. An In\/Out bypass switch allows easy engagement or disengagement of the entire EQ section. Whether you’re tracking or mixing, the EQ4-500 delivers smooth, musical equalization with unmatched clarity—especially when shaping the top end using Maag’s Air Band. With thoughtful updates and proven sonic performance, the EQ4-500 is the ultimate equalizer for any 500VPR rack owner and a reliable tool for enhancing everything from individual tracks to full mixes.\u003c\/p\u003e","brand":"Maag Audio","offers":[{"title":"Default Title","offer_id":44449382596711,"sku":"17801","price":1195.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/maag-eq4-500-2025_17801_1.jpg?v=1787088793"},{"product_id":"tonelux-eq5p-module","title":"Tonelux EQ5P 500 Series Parametric EQ","description":"\u003cp\u003eNot your everyday parametric EQ, The \u003cstrong\u003eTonelux EQ5P\u003c\/strong\u003e takes a nod in a historic direction with its \"Proportional Q\" approach, offering a pleasingly musical response with a curve identical to a number of classic EQs. When you need an EQ capable of surgery and one that's sweet but not overly so, the EQ5P does the trick, giving you four bands to pull out unwanted frequencies while retaining a natural, musical sound that's honest to the source. Arguably one of the most versatile 500 Series EQs available.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlexible \"Proportional Q\" approach yields a classic sound\u003c\/li\u003e\n\u003cli\u003eOverlapping frequency bands give you broad control\u003c\/li\u003e\n\u003cli\u003eTop band offers shelving, bottom bands offer a fixed Q switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eFlexible \"Proportional Q\" approach yields a classic sound\u003c\/strong\u003e\u003cbr\u003eTonally, classic parametric EQs offered a bit more magic than most modern counterparts, thanks to their \"Proportional Q\" design. The Tonelux EQ5P draws on history, taking the same classic approach as its older brother the popular EQ4P. There are four parametric bands all with the \"Proportional Q\" effect available. Turn the boost all the way to one side and the Q becomes more narrow, just under an octave. If you turn it gradually from the center, you can go from a wide band of three octaves gradually down to that one octave. The broad-to-narrow nature keeps the EQ5P musical and also keeps you out of trouble by avoiding boosting too much in too narrow of a bandwidth.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOverlapping frequency bands give you broad control\u003c\/strong\u003e\u003cbr\u003eThe Tonelux EQ5P offers overlapping frequency bands, each one continuously variable so you can dial in on exactly what you want to boost or cut. Then, you have a +\/-15dB boost or cut, with that \"Proportional Q\" effect. The top two bands are identical at 500Hz-21kHz. The EQ5P's third and fourth bands are nearly identical, with the bottom band going down a little lower at 50Hz-3kHz and 16Hz-1kHz respectively.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTop band offers shelving, bottom bands offer a fixed Q switch\u003c\/strong\u003e\u003cbr\u003eOn the bottom three bands of the Tonelux EQ5P, you can switch to a fixed Q of a 1\/3 octave, letting you gradually notch something out if that's what you want. The top band offers a Shelving button that switches it into a shelving mode with a broad proportional Q effect. You can go from 500Hz on up to make things sound nice and bright. As the low frequency bands are broad, there's no need for a shelving switch there. Finally, the Tonelux EQ5P does offer an In\/Out switch that, by demand, switches out only the filters, so you're still getting the benefit of the circuit.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eTonelux EQ5P features:\u003c\/strong\u003e\u003cbr\u003e500 Series parametric EQ with 4 bands\u003cbr\u003eClassic \"Proportional Q\" effect from three octaves to one\u003cbr\u003eSwitchable Fixed Q on bands 2-4 for 1\/3 octave\u003cbr\u003eTop two bands are 500Hz-21kHz\u003cbr\u003eThird band is 50Hz-3kHz\u003cbr\u003eFourth band is 16Hz-1kHz\u003cbr\u003eIn\/Out switch bypasses filters but goes through the circuit\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Tonelux","offers":[{"title":"Default Title","offer_id":44449384071271,"sku":"16944","price":699.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/tonelux_eq5p.jpg?v=1787088799"},{"product_id":"inward-connections-nitro-demo-deal","title":"Inward Connections Nitro (Demo Deal)","description":"\u003cp\u003eWhen you need to perform minor surgery on a track, the Inward Connections \u003cstrong\u003eNitro\u003c\/strong\u003e is ready to scrub in. This fully discrete 500 Series module is a two-band parametric EQ, giving you the shaping tools to pull out problem frequencies or open up and make some room in the top end. With a simple, versatile design enhanced by a warmth-adding VF-600 amp block, Nitro is the perfect addition to any 500 Series lunchbox.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eStraightforward two-band EQ does the job\u003c\/li\u003e\n\u003cli\u003eInward Connections: boutique gear handmade in LA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eStraightforward two-band EQ does the job\u003c\/strong\u003e\u003cbr\u003eThe Inward Connections Nitro wasn't designed for center stage work, but it's the perfect stage hand. This fully discrete two-band parametric EQ adds shaping power to your 500 Series rack. It's the perfect go-to when you want to remove problematic frequencies or create some space on the top end. Plus, thanks to the VF-600 amp block you get all the functionality with a subtle dose of warmth and power too. Bravo.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eInward Connections: boutique gear handmade in LA\u003c\/strong\u003e\u003cbr\u003eInitially one of LA's best-kept secrets, the word about Inward Connections has been sweeping the globe. After all, when you hear guys like Chris Lord-Alge and Eddie Kramer swearing by a brand, you know to pay attention. 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Designed by the now legendary Saul Walker, an adjunct instructor in  music technology, the 550A has been used in recording studios throughout  the world, among them the Record Plant and Sunset Sound, and by such  musical greats as Jimmy Page, Phil Ramone, the Doobie Brothers, Stevie  Wonder, Leon Russell, Frank Zappa, Marvin Gaye, Herbie Hancock, and Bob  Dylan. In 2008 the API 550A was inducted into the Technology Hall of  Fame at the annual Audio Engineering Society (AES) Convention held in  San Francisco.\u003cbr\u003e\u003cbr\u003eWalker, a fellow of AES, designed the equalizer in  1968, and the discrete 550A was first used as a modular OEM equalizer.  As the industry rapidly embraced the sonic quality of the 550A, it  quickly found its way into many custom console designs by Frank DeMedio  and other leading engineers. Many of these consoles are still in use  today. \u003cbr\u003e\u003cbr\u003eForty years later, the 550A remains the standard against  which other EQs are measured, and it has played a major role in the  recording industry for decades. Still copied but never duplicated, the  550A became API's standard channel module EQ when the company began  manufacturing consoles in 1971. With virtually all existing units spoken  for, popular demand for this EQ resulted in API finally resuming  production in 2004. \u003cbr\u003e\u003cbr\u003eWhat accounts for its popularity and  longevity?  \"The 550A design provides a fast, repeatable, and virtually  foolproof mechanism to enhance or accentuate specific segments of the  audio spectrum or to de-emphasize other tonalities while maintaining the  essential integrity of the program material,\" Walker says. He notes  that though newer technology provides greater flexibility at lower cost,  permitting more drastic alteration of the sound spectrum, many artists  just prefer the sound of the original 550A.\u003cbr\u003e\u003cbr\u003eUsers of Walker's  equalizer are fond of its acoustic properties – the 'sweet tonal change'  coursing through the mix and its settings that allow for 'more bite or  body' in the basses. \"An equalizer is, in a way, a musical instrument,\"  Walker says.\u003cbr\u003e\u003cbr\u003eThe 550A provides reciprocal equalization at 15  points in 5 steps of boost to a maximum of 12dB of gain at each point.  The fifteen equalization points are divided into three overlapping  ranges. The high and low frequency ranges are individually selectable as  either peaking or shelving, and a band-pass filter may be inserted  independently of all other selected equalization settings. Frequency  ranges and boost\/cut are selected by three dual-concentric switches and a  push-button \"in\" switch allows the EQ to be silently inserted into the  signal path. A small toggle switch is used to engage the band-pass  filter.\u003cbr\u003e\u003cbr\u003eThe combination of Walker's incomparable 2520 op-amp, and  his \"Proportional Q\" circuitry gives the 550A user an uncomplicated way  to generate acoustically superior equalization. \u003cbr\u003e\u003cbr\u003eThis  long-awaited, limited edition reissue is a continuation of the  equalizers produced by API exactly as they were in the 1960's, featuring  hand-wired switches, the original circuit board design and API founder  Saul Walker's signature on the chassis. an EQ that has had such a part  in the history of recording is continuing to make history in today's  music. \u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449404813415,"sku":"17100","price":1195.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/vintage_api_550a_sw_eq-saul_walker_edition_7ff1f816-e0d7-4030-92e1-e8576635895c.jpg?v=1787088874"},{"product_id":"maag-audio-eq4-demo-deal","title":"Maag Audio EQ4 (Demo Deal)","description":"\u003cp\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eMäag EQ4™\u003c\/span\u003e is a one channel 6  band equalizer with AIR BAND™ (shelf boost from 2.5 to 40kHz),  compatible with the API 500-6B lunchbox® and 500VPR rack systems.\u003cbr\u003e \u003cbr\u003e Following its EQ3 and EQ3-D predecessors, the EQ4 provides unparalleled  transparency and top end presence while maintaining the true natural  sound behind the mix. EQ adjustments are obtained with minimal phase  shift and detent controls allow for easy recallable settings.\u003cbr\u003e \u003cbr\u003e Presented in the flagship 500 Series format, the EQ4 offers the  legendary AIR BAND™ and five other sonically superior band passes.\u003cbr\u003e \u003cbr\u003e \u003cspan style=\"font-weight: bold;\"\u003eSpecifications\u003c\/span\u003e\u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eFrequency Response: -2 dB points, 10Hz \u0026amp; 75kHz\u003c\/li\u003e\r\n\u003cli\u003eNominal Input Impedance (XLR): 48 K Ohms, balanced\u003c\/li\u003e\r\n\u003cli\u003eNominal Output Impedance (XLR): 50 Ohms, balanced\u003c\/li\u003e\r\n\u003cli\u003eHeadroom: +27 dBu\u003c\/li\u003e\r\n\u003cli\u003eTHD + Noise: \u0026lt; 0.005%\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e*Specifications subject to change without notice.\u003c\/p\u003e","brand":"Maag Audio","offers":[{"title":"Default Title","offer_id":44449427259495,"sku":"19577","price":1009.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/maag_eq4_1_1.jpg?v=1787088951"},{"product_id":"moog-music-the-ladder","title":"Moog Music The Ladder","description":"The \u003cb\u003eMoog Ladder\u003c\/b\u003e packs all the punch, fullness and analog euphoria  of the original Moog Filter, but adds key component and feature  upgrades required for professional studio use. From classic Moog  filtering and vibe to modern sweetening and wild, exciting behavior; The  Ladder is a powerful, articulate sound sculpting tool.\u003cbr\u003e \u003cbr\u003e","brand":"Moog Music","offers":[{"title":"Default Title","offer_id":44449441710183,"sku":"19587","price":499.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/moog_music_the_ladder_19587_1_e6776479-8338-4be4-889c-7ff9cdec2200.jpg?v=1787088972"},{"product_id":"phoenix-audio-drs-eq-500","title":"Phoenix Audio DRS-EQ 500 Series EQ","description":"\u003cspan style=\"font-weight: bold;\"\u003ePhoenix Audio DRS-EQ-500 Specifications:\u003c\/span\u003e\u003cbr\u003e \u003cul\u003e\n\u003cli\u003eClass A (DSOP-2) Output specs. Frequency response: 20Hz to 20kHz +- 0.5dB\u003c\/li\u003e\n\u003cli\u003eMaximum Output Level: +26dBu @ 1kHz\u003c\/li\u003e\n\u003cli\u003eNoise: -90dB @ 20Hz to 20kHz.\u003c\/li\u003e\n\u003cli\u003ePhoenix Audio’s unique Class A, buffer DSblip stage.\u003c\/li\u003e\n\u003cli\u003eInput level range: -10dBu to +10dBu\u003c\/li\u003e\n\u003cli\u003eSelf-contained on-board “boost” PSU.\u003c\/li\u003e\n\u003cli\u003eGain Meter: LED Metering. (Green = -2dB, +4dbu \u0026amp; +10dbu Yellow = +13dB, Red = +16dbu.\u003c\/li\u003e\n\u003cli\u003eHigh Pass Filter: Roll-off starts at 80Hz @ 12dB per Octave.\u003c\/li\u003e\n\u003cli\u003eGyratory-based EQ Frequency Centres: (4 Bands) High – 15K, 10K, Hi  Mid – 6K, 3K, 1K6, Low Mid – 800Hz, 400Hz, 200Hz, Low – 130Hz, 80Hz,  40Hz\u003c\/li\u003e\n\u003cli\u003eEQ Cut\/Boost Levels: 16dB Cut\/Boost Per Band, all EQ bands are  stepped\/detented to 21 positions for easy recall \u0026amp; stereo operations  for mastering or the mix bus.\u003c\/li\u003e\n\u003cli\u003eDRS-EQ\/500 has an overall output level with 15db of additional  gain even when the EQ is in bypass, allows the output fader  to be used  to drive the output stage \u0026amp; transformer to color \u0026amp; saturate your  sound, again even when the EQ is in bypass.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Phoenix Audio","offers":[{"title":"Default Title","offer_id":44449441677415,"sku":"20724","price":769.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/phoenix_audio_drs_500_eq_885992dc-181f-437a-b74b-4d2377a6ee75.jpg?v=1787088972"},{"product_id":"a-designs-audio-em-peq-500-series-eq-used","title":"A-Designs Audio EM-PEQ 500 Series EQ (Used)","description":"Beautiful used 500 Series EQ module that sonically nods to the classic Pultec EQP-1A sound.\u003cbr\u003e\u003cbr\u003e","brand":"A Designs","offers":[{"title":"Default Title","offer_id":44449447182439,"sku":"11902","price":850.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_a_designs_audio_em-peq_500_series_eq_07731d09-7d7f-496c-83fa-bb432450eb58.jpg?v=1787088989"},{"product_id":"api-550a-1-eq-used","title":"API 550 A-1 EQ (Vintage)","description":"\u003cp\u003eClean used example of this unit. Formerly used in Studio A at Looking  Glass Studio in NYC, where the likes of David Glass, David Bowie and  David Byrne recorded.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAvedis describes the 550A-1 best: Same features as the 550A but made to  be an economical version in the late 70s. Key differences with the 550A  are:\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eElectronically balanced input in contrast to the  unbalanced input of previous three band eq's. This alone makes some  prefer using it when experiencing the 6 db drop when interfacing  electronically balanced output to an unbalanced input. \u003c\/li\u003e\n\u003cli\u003eConstant Q instead of the proportional Q of the 550A \u003c\/li\u003e\n\u003cli\u003eUse of integrated circuits (IC) \u003c\/li\u003e\n\u003cli\u003eUses one 2520 opamp in the output stage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003col\u003e \u003c\/ol\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAccording  to Al Davis, a designer at API, it should have been called a 551 but  readily available old stock 550A faceplates were used instead. One way I  can usually identify an A-1, without looking inside, is the rubbery  feel of the rotary switches instead of the snap you feel with a 550A.  550A-1's were sometimes found on ebay and sold as 550A's by sellers who  may or may not have known what it was because often the serial number  sticker said \"550A\" without a mention of A-1, and sometimes there was no  serial number sticker.\u003cbr\u003e\u003cbr\u003eLooking at the inside, there is one 2520  driving the output transformer with a feed-forward design using a NPN  transistor. The other amps are IC's with an LF356 balancing the input  and a TL074CN quad amp powering the bands and filter. The front rotary  switches plugged into the circuit board with connectors.\u003cbr\u003e\u003cbr\u003eContrary  to what internet loudmouths may say, the 550A-1 was not a bad module,  it sounds very similar to a 550A with 2 or 4 db and becomes more  noticeable when pushed to 9 or 12 db, which is probably where most  people would boost or cut if something was wrong. Overall, it was a good  design with good noise performance and had the same headroom as any  550A due to the 2520 and output transformer in the output stage. It is  not exactly a 550A with the Q difference and not quite as full in the  low end, in my own tests, but still better than other eq designs of its  time, as the popularity of using IC throughout in the late 70s became  prevalent and overall quality diminished.\u003c\/p\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449447215207,"sku":"4959","price":795.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550a-1_eq_f347ff82-33e7-4cb3-bb03-8e4fdc82dd1c.jpg?v=1787088989"},{"product_id":"api-550a-eq-used","title":"API 550A EQ (Vintage)","description":"\u003cp\u003eVintage selectable-frequency 3 band EQ, with overlapping frequencies and hi\/lo pass filters. Three 2520 opamps. Sweet\/musical and tight. Filters and eq in\/out switch. Class A, all discrete, with hand-wired switches. Amazing on just about anything.\u003cbr\u003e\u003cbr\u003ePrice includes our Premium VK Servicing - a $470 value!\u003c\/p\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449447280743,"sku":"954","price":1350.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550a_eq_2_b9afdffe-2ecf-4d3c-9208-28512637382e.jpg?v=1787088990"},{"product_id":"api-550b-eq-used","title":"API 550B EQ (Used)","description":"\u003cp\u003e\u003cstrong\u003e\u003c\/strong\u003eBased on API's original 550 from the late '60s, the \u003cstrong\u003eAPI 550b\u003c\/strong\u003e is a continuation of the EQ that played a major role in the history of music recording, but with an additional filter band and several new frequencies. Incorporating API's exclusive circuitry and proprietary components (such as the legendary API 2520 Op Amp), the 550b artfully blends the past with the present. So many hit records still depend on the unique 550 sound that engineers around the world find it to be an invaluable tool. In fact, the 550b design has been taken from the original blue prints and spec control drawings from the API archives. It is unlike any other EQ you will ever use.\u003cbr\u003e\u003cbr\u003eRather than offer a huge assortment of complex features, the API 550b provides exactly the right number of controls. Its four EQ bands are overlapped significantly to aid in dual roles as problem solver and sweetening device with each band offering seven switchable filter frequencies that span four-to-five octaves. These frequencies, purposely selected to be musical rather than numeric, were selected by an experienced \"who's who\" list of the industry's most proficient engineers.\u003cbr\u003e\u003cbr\u003eMaking use of API's \"Proportional Q,\" an innovation designed by Saul Walker in the '60s, the 550b intuitively widens the filter bandwidth at minimal settings and narrows it at higher settings without the need for additional bandwidth controls. This unique feature minimizes the \"phase-shift\" sound found in many equalizers. In addition, the reciprocal nature of the 550b enables the user to \"undo\" what has been done previously with exact precision.\u003cbr\u003e\u003cbr\u003eThe benefits of the API 550b are most obvious to those who work with EQ on a continuous basis. If major tonal restructuring is required, the extraordinary headroom made possible with API's 2520 Op Amp offers the predictable and warm analog performance, even under duress. With a surprisingly wide range of tonal variations, the 550b is an invaluable and professional audio tool with great flexibility and excellent sonic ability. \r\n\r\n\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449447313511,"sku":"4939","price":795.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550b_eq_stock_cat.jpg?v=1787088990"},{"product_id":"chandler-little-devil-equalizer-used","title":"Chandler Limited Little Devil Equalizer (Used)","description":"\u003cp\u003eNote: This unit is not VPR compliant and may not work with every 500 Series rack\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFollowing in the rich tradition of English 60s and 70s console design, Chandler Limited enters the 500 race furiously with its new \u003cstrong\u003eLittle Devil Equalizers and Compressors\u003c\/strong\u003e. With all discrete circuits, transformer balanced everything, and the American hand-made quality you expect from Chandler, the Devils combine Chandler’s best designs with the hottest designs from the past.\u003c\/p\u003e","brand":"Chandler Limited","offers":[{"title":"Default Title","offer_id":44449447379047,"sku":"19415","price":895.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_chandler_little_devil_eq__139_cat_51c91ea0-40f0-42fe-8953-d4d542f75e15.jpg?v=1787088990"},{"product_id":"great-river-harrison-32eq-used","title":"Great River \/ Harrison 32EQ (Used)","description":"\u003cp\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eGreat River 32EQ\u003c\/span\u003e is a new 500-series version of the EQ and filters from the renowned Harrison 32 Series consoles.\u003cbr\u003e \u003cbr\u003e The 32EQ incorporates the original specifications and with support directly from the original designers at Harrison Consoles it is guaranteed that the prized characteristics of the original were maintained in the new design.\u003cbr\u003e \u003cbr style=\"font-weight: bold;\"\u003e \u003cspan style=\"font-weight: bold;\"\u003eThe 32EQ has the full features of the 32-series EQ\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLow, Low-Mid, Hi-Mid, and High EQ bands with Gain and Frequency controls\u003c\/li\u003e\n\u003cli\u003eLow and High Band “peaking” switches\u003c\/li\u003e\n\u003cli\u003eEQ in\/out switch\u003c\/li\u003e\n\u003cli\u003eHarrison’s renowned High- and Low-pass filters with sweepable frequency\u003c\/li\u003e\n\u003cli\u003eFilter in\/out switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eAn internal jumper provides selection of the “vintage” feedback design, or a non-feedback option. The Harrison 32-Series console was the world’s first 32-bus “inline” recording consoles. They became a staple among recording studios and were the basis for many console designs (Harrison and otherwise) that followed. Countless hit records were produced on Harrison consoles during the birth of modern pop productions, including Abba, Sade, Queen, Janet Jackson and Michael Jackson. The 32C console was used by Bruce Swedien in the recording and mixing of Michael Jackson’s Thriller, the best-selling album of all time.\u003cbr\u003e \u003cbr\u003e Gary Thielman said, “For many years, Harrison has had requests for our prized analog products in a smaller form-factor. During that time, we kept hearing great things about Dan Kennedy and Great River Electronics. Their products are superbly made and they are as fanatically supportive towards their customers as we are to our own. We realized that we had an opportunity to launch a product that the world has been requesting, while continuing forward with our passion which is building large-format consoles.”\u003cbr\u003e \u003cbr\u003e Like all Great River and Harrison products, the 32EQ is designed and built in the USA.\u003c\/p\u003e","brand":"Great River Electronics","offers":[{"title":"Default Title","offer_id":44449447444583,"sku":"17414","price":650.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_great_river_harrison_32eq_cat_cf35f5ca-a571-4760-b299-6b92aa48ffba.jpg?v=1787088990"},{"product_id":"ssl-superanalogue-eq-module-xr625-used","title":"SSL SuperAnalogue EQ Module XR625 (Used)","description":"\u003cp\u003eClassic SSL four-band parametric EQ that is a superb all round frequency adjustment tool kit. Whether you need pinpoint accuracy for surgical problem solving, smoother broader sound shaping or a little more aggressive character the SSL EQ will give you what you need. This is a fully featured EQ with high- and low-bands switchable between shelving or fixed Q bell curves and two mid-bands each with variable Q control.\u003c\/p\u003e","brand":"SSL","offers":[{"title":"Default Title","offer_id":44449447411815,"sku":"16153","price":499.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_ssl_superanalog_xr625_eq_46fb28d5-21c6-4d95-9e5e-9ea8270ab7da.jpg?v=1787088990"},{"product_id":"api-550-eq-used","title":"API 550 EQ (Vintage)","description":"Vintage selectable-frequency, non-overlapping 3 band EQ with hi\/lo pass filters. Purists say this is the best sounding API module ever made, due to its simple amplifier design. It has a more direct signal path, using two API 2520 op-amps instead of the three used in a 550a.","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449459601511,"sku":"1049","price":1095.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550_eq__2464_cat_fd54303d-6814-4e03-ab95-1fa6f0563a88.jpg?v=1787089042"},{"product_id":"api-550a-eq-reissue-used","title":"API 550A EQ Reissue (Used)","description":"Few equalizers enjoy the respect and admiration of the coveted \u003cspan style=\"font-weight: bold;\"\u003eAPI 550A\u003c\/span\u003e.\n Designed by the now-legendary Saul Walker in the late '60s, the \ndiscrete 550A was first used as a modular OEM equalizer. As the industry\n rapidly embraced the sonic quality of the 550A, it quickly found its \nway into many custom console designs by Frank DeMedio and other leading \nengineers. Many of these consoles are still in use today.\u003cbr\u003e\n\u003cbr\u003e\nForty years later, the 550A remains the standard against which other EQs\n are measured, and it has played a major role in the recording industry \nfor decades. Still copied but never duplicated, the 550A became API's \nstandard channel module EQ when the company began manufacturing consoles\n in 1971. With virtually all existing units spoken for, popular demand \nfor this EQ resulted in API finally resuming production in 2004.\u003cbr\u003e\n\u003cbr\u003e\nThe 550A provides reciprocal equalization at 21 points in 7 steps of \nboost to a maximum of 12dB of gain at each point. The fifteen \nequalization points are divided into three overlapping ranges. The high \nand low frequency ranges are individually selectable as either peaking \nor shelving, and a band-pass filter may be inserted independently of all\n other selected equalization settings. Frequency ranges and boost\/cut \nare selected by three dual-concentric switches, and a pushbutton \"in\" \nswitch allows the EQ to be silently introduced to the signal path. A \nsmall toggle switch is used to insert the band-pass filter into the \n550A.\u003cbr\u003e\n\u003cbr\u003e\nThe combination of Walker's incomparable 2520 op amp and his \n\"Proportional Q\" circuitry gives the 550A user an uncomplicated way to \ngenerate acoustically superior equalization.\u003cbr\u003e\n\u003cbr\u003e\nWith the long-awaited reissue of this unit, an EQ that has had such a \npart in the history of recording is continuing to make history in \ntoday's music.\u003cbr\u003e\n\u003cbr\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eFeatures\u003c\/span\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003e3 bands of classic API equalization\u003c\/li\u003e\n\u003cli\u003eEach band offers 7 API selected frequency centers\u003c\/li\u003e\n\u003cli\u003eReciprocal and repeatable filtering\u003c\/li\u003e\n\u003cli\u003eMaximum 12 dB of boost\/cut per band\u003c\/li\u003e\n\u003cli\u003eEQ Band 1 and 3 offer shelf\/peak switching\u003c\/li\u003e\n\u003cli\u003e\"Proportional Q\" narrows filter Q at extremes\u003c\/li\u003e\n\u003cli\u003eTraditional API fully discrete circuit design\u003c\/li\u003e\n\u003cli\u003eHigh headroom +30 dB clip level \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449459634279,"sku":"20939","price":795.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_550a_reissue_cat_346cdafb-c41b-402a-b3d3-d992e56f73f4.jpg?v=1787089042"},{"product_id":"api-560-graphic-eq-reissue-used","title":"API 560 Graphic EQ Reissue (Used)","description":"Originally conceived for use in API Consoles of the 60's and 70's, the API 560 re-issue is a unique device designed to accomplish tasks that no other EQ can do. It delivers that \"one-of-a-kind\" API sound, precision easy-set filtering, and high headroom in a very small package. Extremely fast to set and reset using accurate zero detents, the curve shaping potential of the 560 is unmatched. At home both in field recording and the studio environment, this \"new-old\" version is a re-issue of the original 560 with improved resolution in the critical area of ±4 dB. Incorporating API's exclusive circuitry and proprietary components (such as the legendary 2520 op-amp), the re-issue of the 560 artfully blends the past with present—layout with function.\u003cbr\u003e\u003cbr\u003eThe API 560 was created to fit all applications for the professional engineer. For most of the 70's and 80's, every remote recording console that API manufactured used this versatile graphic EQ. It is also ideal for studio and live sound applications, where a professional result is required. This re-issue design has been taken from the original blue prints and spec control drawings from the API archives.\u003cbr\u003e\u003cbr\u003eThe large number of available EQ bands make the 560 an ideal companion to parametric EQ, as well as ideal for signal sweetening and room tuning. Not lacking in features, the 560 makes use of API's unique \"Proportional Q\" design introduced by API in the 60's, intuitively widening the filter bandwidth at lower boost\/cut levels and narrowing it at higher settings. In addition, boost and cut characteristics are identical, so previous actions can be undone.\u003cbr\u003e\u003cbr\u003eThe extraordinary headroom made possible with API's proprietary 2520 op-amp offers predictable and wonderful \"analog\" performance under duress. With a wider range of 500 mounting options, the 560 will be a valuable asset to your performance critical applications.\u003cbr\u003e\u003cbr\u003eThe 560 Graphic Equalizer makes use of the 2510 and 2520 op-amps and therefore exhibits the reliability, long life, and uniformity which are characteristic of API products.","brand":"API Audio","offers":[{"title":"Default Title","offer_id":44449459667047,"sku":"13713","price":625.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/used_api_560_eq_reissue_cat_6974dd36-00f4-46b5-a849-814aa902eb3f.jpg?v=1787089042"},{"product_id":"cartec-audio-fe-q5","title":"Cartec Audio FE-Q5","description":"\u003cbr\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eCartec FE-Q5 \u003c\/span\u003eis a high quality inductor based equalizer for the API 500 series format that incorporates a discrete amplifier stages, a 12dB\/octave high pass filter, and both input and output transformers.\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003cbr\u003e\u003cul\u003e\n\u003cli\u003eCustom wound input and output transformers, plus two multi-tap inductors and two Op-amps\u003c\/li\u003e\n\u003cli\u003eUses the same input transformer as our EQP-1A equalizer\u003c\/li\u003e\n\u003cli\u003eAll discrete Op-amp design\u003c\/li\u003e\n\u003cli\u003eHigh quality rotary switches used for gain controls, for accurate recall and fine control\u003c\/li\u003e\n\u003cli\u003eSallen-Key 12dB\/octave high pass filter independent of equalizer with its own discrete op-amp\u003c\/li\u003e\n\u003cli\u003ePassive LCR filter design for minimal phase distortion\u003c\/li\u003e\n\u003cli\u003eCompatible with all 500 series racks\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Cartec Audio","offers":[{"title":"Default Title","offer_id":44449465040999,"sku":"22322","price":1099.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/cartec_fe_q5_b6c4da04-7f89-433d-bd9b-e68cd674ed52.jpg?v=1787089055"},{"product_id":"cartec-audio-pre-q5","title":"Cartec Audio PRE-Q5","description":null,"brand":"Cartec Audio","offers":[{"title":"Default Title","offer_id":44449465106535,"sku":"22321","price":899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0658\/8848\/5479\/files\/cartec_pre_q5_7d8a5a88-5a2d-4d0e-890f-ab3e0ae4f8c7.jpg?v=1787089055"}],"url":"https:\/\/vintageking1.myshopify.com\/collections\/recording-outboard-500-series-500-series-eq.oembed","provider":"VINTAGE KING AUDIO","version":"1.0","type":"link"}