Feedback Diode Fuzz w. 2-Band Tone PUBLIC

Feedback Diode Fuzz with 2-Band Tone and Aux Buffer Out

Feedback-diode fuzz circuit with 2-band James-style tone-controls, and auxiliary buffered output (in addition to normal output). Controls Include: Drive 1, Gain, Fuzz enable switch, Drive 2, Bass, Center, Treble, Buffer Level, and Volume. Frequency Range 38 Hz to 10 kHz with all controls at 50% and with emphasis on mids but with highs dropping rapidly above 10 kHz. Suitable for 6/7-string guitar or 4-string bass (not recommended for 8-string guitar or 5/6-string bass). With Fuzz disabled, circuit will function as a Clean Boost with 2-band tone. As shown, fuzz sound is of standard/traditional kind from silicon diodes in an asymmetric feedback-type array. For softer fuzz, replace the silicon types with germaniums (e.g. 1N34A), or for fuzzier fuzz than from germaniums use Schottky diodes instead (e.g. 1N5819). Power-supply not shown. Requires a regulated dual-polarity DC supply providing +-9VDC or +-12VDC or +-15VDC at >= 40 mA of current. [Note: Higher supply voltage results in lower op-amp noise.] And though simulator verified, treat the circuit as experimental. Breadboard test it before committing to a soldered build.