OD w. 2-Voice Fuzz & 2-Voice Distortion PUBLIC

Overdrive Circuit with 2-Voice Fuzz and 2-Voice Distortion

Overdrive circuit with 2-voice diode fuzz and 2-voice op-amp distortion. The fuzz voices are from standard-silicon diodes and Schottky diodes in separate shunt-type arrays. The distortion voices are from two different dual op-amp ICs operated in parallel. One provides tube-like BJT distortion and the other gives pleasant MOSFET distortion. Controls Include: Attenuation, Input Gain, Fuzz 1 enable switch, Fuzz 1 symmetry switches, Fuzz 1 Depth, Fuzz 2 enable switch, Fuzz 2 symmetry switches, Fuzz 2 Depth, High Trim, Low Trim, Bass, Mid, Treble, Distortion 1 Gain, Distortion 2 Gain, Output Gain, and master Volume. Frequency Range is 12 Hz to 16 kHz with all controls at 50%, but bandwidth is greater with controls > 50%. Suitable for 6/7/8-string guitar or 4/5/6-string bass. Caution! High-gain circuit. Maximum gain = +32 dBV @ 250 Hz with all controls at 50%, or more than twice that with all controls at 100%. Power-supply not shown. Requires a regulated dual-polarity DC supply providing +-9VDC or +-12VDC or +-15VDC at >= 60 mA of current. And though simulator verified, treat the circuit as experimental. Breadboard test before soldering.