Add a foot switch for expanded functionality

Special edition BOSS overdrive pedal with next-generation sound

A bass cab that will withstand the rigours of touring without the back-breaking weight

Change the order of the effect blocks

Back & Sides:    Mahogany

Electro-Harmonix Op-Amp Big Muff Pi Category_Systems Add a foot switch forFaithful re creation of the original late 70s Op Amp Big Muff Pi! 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