Electro Harmonix Big Muff Pi 2 | Dual Op-Amp Fuzz Pedal

The Electro-Harmonix Big Muff Pi 2 is a newly unearthed fuzz circuit born from the original minds behind the legendary Big Muff—Mike Matthews and Bob Myer. Rediscovered decades later by Josh Scott (JHS Pedals) and Daniel Danger in Bob’s original hand-drawn schematics, the BMP2 resurrects a forgotten dual op-amp design from the late ’70s and delivers a fresh twist on classic Muff tones.

The Big Muff Pi 2 offers singing sustain, thick fuzz saturation, and a unique sonic profile with a crisp top end, booming lows, and raw, less refined clipping. It remains true to the Big Muff legacy but brings its own more dynamic, slightly fuzzier voice to the table—perfect for players seeking a new flavor in the Muff family.

In a first for any Big Muff, the BMP2 features silent true bypass switching with latching or momentary modes—tap it for traditional use, or hold for bursts of fuzz chaos. Housed in a compact nano chassis with artwork by Daniel Danger, this is both a piece of history and a bold new fuzz tool for any pedalboard.

Highlights

• Rediscovered dual op-amp fuzz circuit from the late ’70s

• Singing sustain, gritty edge, and massive gain

• More dynamic and raw than classic BMPs, with brash clipping and wide frequency range

• VOL, TONE, and SUSTAIN controls for classic Muff shaping

• True bypass with latching/momentary footswitch operation

• Custom artwork by Daniel Danger

• Compact nano-sized die-cast chassis

Specifications

Circuit: Analog
Bypass: True Bypass with Latching/Momentary switching
Controls: Volume, Tone, Sustain
Power:

• 9V Battery (included)

• 9.6VDC-200mA power adapter (not included)
  Current Draw: 15mA
  Audio: Mono
  Dimensions: 5.75" x 3.45" x 2.75"
  Year Released: 2025
  UPC: 683274012728