Overdrive with Shunt-Diode Fuzz PUBLIC

Overdrive with Shunt-Diode Fuzz and 3-Band Tone

Overdrive circuit with shunt-type hard-clipping diode fuzz and Fender-style 3-band tone-stack. Controls Include: Input Gain, Drive 1, Fuzz enable switch, Fuzz symmetry switches (two, with 2 settings each; for setting harmonic content of fuzz), Drive 2, Bass, Mid, Treble, Stack Sum, Output Gain, and Volume. Frequency Range 40 Hz to 10 kHz with all controls at 50%, or 20 Hz to 40 kHz with all controls at 100%. [Do not use circuit with all controls at 100% except as a worst-case scenario while breadboard testing.] Suitable for 6/7-string electric guitar. [Not recommended for 8-string guitar or bass-guitar.] Fuzz is from standard silicon diodes, for classic fuzz tone. Maximum Gain = +30 dBV between 160 Hz to 1 kHz with all controls at 50%, or +66 dBV with all controls at 100%. Power-supply not shown. Requires a regulated dual-polarity DC supply providing +-9VDC or +-12VDC or +-15V DC at >= 40 mA of current. And though simulator verified, treat the circuit as experimental. Breadboard test before soldering.