With original late-70s Op-Amp Big Muffs selling for exorbitant prices, Mike Matthews decided to take the power to the people and reissue the classic pedal at a price that players could afford! The circuitry of the new Op-Amp Big Muff —sometimes also referred to as the IC or V4 Big Muff— has been faithfully re-created while several practical enhancements have been added including a compact, die-cast chassis and true bypass switching.
The pedal relies on op-amps rather than transistors and three gain stages rather than four, to create its signature sound. It’s a sound that’s been described by noted Big Muff collector and historian, Kit Rae, as: “a huge, crushing Big Muff sound with more crunch… great for grungy, wall-of-sound distortion, heavy rhythm playing and heavy leads.”
Specifications:

YAMAHA TRBX174 EXOTIC WOOD RTB
SHURE MV88 MOTIV DIGITAL STEREO CONDENSER MIC
EVANS 22 GENERA G2 CLEAR BASS DRUM HEAD
EVANS 22 EQ3 BATTER COATED
PROTECTION RACKET SUR18 SURDO CASE
EVANS 22 RETRO SCREEN BLACK
SEYMOUR DUNCAN SHR-1N HOT RAILS STRAT NECK/MIDDLE PICKUP BLACK
EVANS EC1 COATED 10 INCH
REMO 20EMPEROR CLEAR
AKG K92
GEWA PIEZO-PICKUP WITH PLUG IN CABLE
K&M M8 X27
MXR 78 CUSTOM BADASS DISTORTION 