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  1. G

    blending circuit errors using buffers

    I'm trying to blend clean and zendrive circuits using clone buffers with the circuit shown above, but the blending knob is only hearing beeps noise toward the clean, so did I do something wrong? There is no problem with individual use of buffer and zendrive. However, there is noise in the...
  2. G

    Can you guess what this distortion is?

    Can you infer which circuit this schematic is original from? It is a 4-knob board and the original is written to use opa2134. (photo jrc072)
  3. G

    Is there a similar circuit? 320design brown feather

    I recently became interested in the 320design brown feather pedal and am trying to make a similar pedal. Is there any related information? There is no information, perhaps because it is a Japanese-made pedal.
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    What is the difference between the Ultraphonix HRM version?

    I want to modify the ultraphonix circuit and make it into an hrm version. Does anyone know anything about it? Even a picture of the circuit diagram is difficult to find.
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