Effect Pedals & Processors

Electro Harmonix Op-Amp Big Muff Pi Fuzz Electro Harmonix Op-Amp Big Muff Pi Fuzz, Effects Pedal, Faithfully modeled after the legendary circuit Op-Amp Big Muff Pi from the late 70's with some practical improvements, including a compact die-cast housing and True Bypass, Controls: Volume -... Electro Harmonix Op-Amp Big Muff Pi Fuzz