Electro-Harmonix Op-Amp Big Muff Pi Distortion/Sustainer Humbuckers The round core is much

The round core is much more flexible under the fingers

attaches to the inside of your instrument case

this is the one that started it all

For the working musician there is nothing more important than having great sounding and reliable instrument

while still retaining the warm tone and natural feel of the uncoated string

Electro-Harmonix Op-Amp Big Muff Pi Distortion/Sustainer Humbuckers The round core is muchWith 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. Quick Specs A