Multi-Fuzz Booster PUBLIC

Booster Circuit with 3-stages of Vintage-Sounding Fuzz

Booster with 3-stages of vintage sounding fuzz. Controls Include: Input Attenuation, Input Tone, Direct Gain, Direct Level, Fuzz Enable switch, Fuzz 1 Drive, Fuzz 1 Gain, Fuzz 1 Treble Boost switch, Fuzz 2 Enable switch, Fuzz 3 Enable switch, Fuzz 3 Gain, Output Tone, Output Gain, and Volume. Frequency Range 10 Hz to > 20 kHz with all controls at 50%. Suitable for 6/7/8-string guitar or 4/5/6-string bass. Maximum Gain = 20 dBV with all controls at 50%, or > twice that with all controls at 100%. Intended for stomp-box projects, but the battery can be replaced by a regulated +9V DC power-supply providing >= 50 mA of current. And though simulator verified, treat the circuit as experimental. Breadboard test it before committing to soldered build. Notes: Total fuzz sound is an adjustable mix of 3 actual vintage transistor sub-circuits. Fuzz 1 is from a single silicon transistor. Fuzz 2 is from three silicon diodes in a shunt-type array. Fuzz 3 is from a pair of germanium transistors. The specified IC is a dual FET-input op-amp IC chosen to ensure a clean Direct signal regardless of control settings.