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A system to be used with a single amplifier, designed so that a pallette of microphones could be utilized without the necessity of having an abundance of microphones at your disposal. However, practicality was not the driving force of this design; we believe you will be impressed with the beautiful tones these capsules will produce. \u003cbr\u003e\u003cbr\u003e“I individually build and tune each capsule one at a time and let my ears finish the job from where test equipment leaves off. Try them. They Sing!” \u003cbr\u003e\u003cbr\u003eThe Korby Convertible is the finest new tube microphone available. A revolutionary, interchangeable head design (see demo below), available with a 251, C12, U67 and U47 head assemblies. The heads are hot-swappable and can be removed without the use of tools in session. 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