Used Electro-Harmonix Big Muff Op-amp Effect Pedal

Experience the legendary tone and reliable performance of a used Electro-Harmonix Big Muff Op-amp Distortion/Sustainer pedal, fully functional and in great condition. Celebrated for its bold, aggressive fuzz made famous in the late '70s and brought back for today’s players, this model delivers rich sustain and sharp, cutting distortion thanks to its distinctive op-amp circuit. Housed in a durable metal enclosure with true bypass switching, it features simple, responsive controls for Volume, Sustain, and Tone—making it easy to dial in everything from warm, vintage textures to searing modern fuzz. Whether you're playing live or recording, this pedal is a dependable choice for guitarists seeking authentic sound with proven versatility, powered by a 9V battery or standard adapter (not included).