4-Voiced Fuzz Circuit for Guitar PUBLIC

4-Voiced Fuzz Circuit with 3-Band Tone for Guitar

4-voiced diode fuzz circuit with 3-band Fender-style tone-stack. Controls Include: Input Gain, Drive, Fuzz enable switches (four, separate; one per voice), Fuzz symmetry switches (SSW, set harmonic content of fuzz), Fuzz Depth, High Cut, Bass, Mid, Treble, and Volume. Range above 0 dBV is from 16 Hz to > 25 kHz, with emphasis on mids and highs, and all controls at 50%. Suitable for 6/7/8-string guitar or 4/5/6-string bass. Maximum gain = +33.4 dBV @ 630 Hz with all controls at 50%, or +46.3 dBV with Input Gain, Drive, and Volume at 100%, but all other controls at 50%. Fuzz voices are due to different types of diodes; Fuzz 1 from LEDs, Fuzz 2 from standard silicon, Fuzz 3 from germanium, and Fuzz 4 from Schottky. Specified IC is dual JFET-input op-amp IC providing acceptable distortion when overdriven, in addition to the diode-generated fuzz. Power-supply not shown. Requires a regulated dual-polarity DC supply giving +-9VDC or +-12VDC or +-15VDC at >= 20 mA of current. While simulator verified, treat the circuit as experimental. Breadboard test before committing to a soldered build.