Used Electro-Harmonix Big Muff Op-amp Effect Pedal

Capture iconic, soaring fuzz with this used Electro-Harmonix Big Muff Op-Amp, in great condition and ready for the stage or studio. Designed around the legendary op-amp circuit, it delivers tight, aggressive distortion with long sustain and rich harmonics—perfect for punchy leads and massive rhythm tones. Simple controls for Volume, Tone, and Sustain make dialing in your sound fast, while True Bypass preserves your clean signal when off. Powered by 9V battery or standard 9V DC adapter.