Used Electro-Harmonix Big Muff Op-amp Effect Pedal

This used Electro-Harmonix Big Muff Op-Amp delivers the iconic 1970s-style op-amp fuzz with rich sustain, aggressive mids, and singing leads perfect for rock, alt, and grunge tones. In good condition, it features simple, gig-ready controls for Volume, Tone, Sustain, plus a Tone Bypass switch for a rawer, punchier sound. Runs on a 9V battery or standard 9V DC pedal power (center-negative) and uses a 1/4" input/output for easy pedalboard integration.