Electro-Harmonix Op-Amp Big Muff Pi Fuzz Pedal Features:
Captures Billy Corgan (Smashing Pumpkins)'s iconic fuzz sound
Based on the late-'70s op-amp equipped V4 IC Big Muff Pi
Easier-traveling compact size
Durable die-cast construction
True bypass switching preserves tone between uses
Independent Volume, Tone, and Sustain (gain) controls
Tone bypass switch temporarily toggles the tone circuit for added power
Powered by a 9-volt battery (included) or standard 9-volt adapter (sold separately)