Used Electro-Harmonix Big Muff Op-amp Effect Pedal

Used Electro-Harmonix Big Muff Op-Amp delivers the iconic ’70s op-amp fuzz made famous for its massive sustain, creamy distortion, and cutting midrange bite. This unit is in great condition and ready for stage or studio, featuring Volume, Tone, and Sustain controls for dialing everything from gritty crunch to soaring leads. Compact, pedalboard-friendly enclosure with true bypass switching, standard 1/4" in/out jacks, and 9V operation (battery or optional adapter).