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Optional Octave-Fuzz Switch
The laid-back blue twill cap offers a comfortable yet stylish fit
A separate Dry output allows for two amps sets for increased setup versatility
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Electro-Harmonix Op-Amp Big Muff Pi Distortion/Sustainer Keyboard Pedals Optional Octave-Fuzz SwitchThis brand new Electro Harmonix Op Amp Big Muff Pi Distortion Sustainer Pedal will ship from our Rapid City, SD location. Buy risk free with our 14 day full refund, less shipping, return policy. Check out our shop policies for more details. 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