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:

KLOTZ TM.STEVENS FUNKMASTER 4,5M
BOSS ML2 METAL CORE
MEINL MSTCJB CAJON BAG
MXR M287 SUB OCTAVE BASS FUZZ
YAMAHA CG 182S CLASSICAL GUITAR NATURAL SPRUCE SOLID WOOD
DUNLOP 87B ELECTRIC TRIGGER CAPO
STAGG MUS-LED4 MUSIC STAND LIGHT
BLACKSTAR ST. JAMES 50 6L6 212 COMBO
FENDER BLUES JUNIOR IV 30TH ANNIVERSARY GUITAR AMPLIFIER
K&M 10062 MUSIC STAND ROBBY EXCLUSIVE
SEYMOUR DUNCAN STK-4M CLASSIC STACK PLUS STRAT MIDDLE PICKUP RW/RP BLACK
GRAPHTECH TUSQ PQ-2200-00 F-STYLE GUITAR OR BASS NUT FLAT BLANK
MXR M193 GT-OD 