Electro-Harmonix Big Muff Pi Op Amp Fuzz


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.

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The Electro-Harmonix Big Muff Pi Op Amp Fuzz is a gateway to vintage tone bliss, providing iconic fuzz that’s been instrumental in creating legendary guitar tones.

This classic pedal is a timeless favorite known for its distinctive sound and has been used by countless guitarists to shape their music. With its simple yet effective controls, you can easily dial in that signature vintage fuzz tone.

Whether you’re aiming to recreate the timeless tones of classic rock or carve out your unique sonic path, the Big Muff Pi Op Amp Fuzz is the key to unlocking those vintage-inspired sounds.

Built with Electro-Harmonix’s reputation for durability, this pedal can handle the demands of both live performances and studio sessions. Its compact design ensures that it doesn’t take up unnecessary space on your pedalboard, making it a must-have addition to your rig.

Experience vintage tone bliss with the Electro-Harmonix Big Muff Pi Op Amp Fuzz and explore the classic fuzz that’s been the cornerstone of legendary guitar tones for decades.


  • A faithful reissue of the original classic circa 1978
  • Iconic sound and vibe that’s coveted by guitarists
  • Controls for Tone, Sustain and Volume, plus a Tone Bypass switch
  • True bypass switching for maximum signal integrity in bypass mode
  • Rugged, compact, die-cast package… pedalboard friendly
  • 9V battery included

Additional information

Weight0,5 kg
Dimensions15 × 9 × 9 cm


Effects Type

Distortion, Fuzz

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