Electro Harmonix Op Amp Big Muff Pi

A faithful recreation of the famous Op Amp Big Muff Pi. 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.” Made famous by The Smashing Pumpkins.

Video: https://youtu.be/xmUZ6nCFNoU

Product Specs

• Item Number: 44025
• Make: Electro Harmonix
• Model: Op Amp Big Muff Pi
• Condition: Very Good
• Finish: Orange
• Categories: effects-and-pedals ⇒ fuzz ⇒ pedal
• Function: Distortion Fuzz
• Year: 2026
• Made In: United States
• MPN: 44025
• Modular Grid: Pedals ⓘ ＋
• Dimensions*: 70 mm wide 114 mm high
• Power*: ? mA / 9 V DC / Negative Center

* User contributed details