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A-178 is a theremin-controlled voltage source with a BNC connector. The latter component is used to affix an antenna to the front faceplate. From there, users can manipulate emitted control voltages by moving their hand in proximity to the antenna with a total range of 30cm. There's also a gate output with threshold control, equipping the module with everything necessary for conversing with other modules in a modular synthesizer system.
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