Used Electro-Harmonix Big Muff Op-amp Effect Pedal

This used Electro-Harmonix Big Muff Op-Amp delivers the legendary ’70s op-amp fuzz with singing sustain, aggressive mids, and thick distortion that cuts through any mix. In good condition, it’s a perfect choice for classic rock, grunge, and soaring lead tones. Features simple Volume, Tone, and Sustain controls plus a true bypass footswitch for a clean signal when off. Rugged compact enclosure and standard 1/4" input/output jacks make it pedalboard-ready.