Electro-Harmonix Big Muff Pi 2 Fuzz Pedal

zZounds Gear Experts Say...
A classic design hidden from time, Electro-Harmonix’s Big Muff Pi 2 delivers vintage fuzz with a never-before-heard dual op-amp sustain and tone.

Electro-Harmonix Founder and President, Mike Matthews and serial inventor Bob Myer go way back. Together, they designed the very first Big Muff and had a working relationship throughout EHX's storied history. Always innovating, Bob was known to present Mike with updated designs to keep up with available technology of the times. As the process goes, designs get selected and others get put aside and forgotten about. The Big Muff Pi 2 Dual Op-Amp design is one that didn't make the cut back in the late '70s and was promptly stashed away in Bob's files. While interviewing Bob in his old workshop, EHX disciples Josh Scott (of JHS Pedals) and Daniel Danger uncovered this novel circuit design as a hand drawn schematic amongst Bob's old notes. Josh went to work decoding the original schematic and resurrected the circuit as the Big Muff Pi 2.

The Big Muff Pi 2 is similar to the classic Big Muff Pi but has a unique fuzz tone to further fill out your Muff flavor palette. With singing sustain and gobs of gain, the BMP2 remains true to the Big Muff Pi legacy with its own edge and response. A crispy top end, booming lows, and slightly less refined clipping gives the Big Muff Pi 2 a particularly cool feel that's both unique and distinctly Big Muff. Slightly more dynamic, slightly more fuzzy, the Big Muff 2 is must-try for any BMP lover!

Check out the Perfect Pairing of the Electro-Harmonix Big Muff Pi 2 and the Source Audio EQ2 pedal:


Featuring the familiar control set of Volume, Tone, and read more Sustain, the Big Muff Pi 2 comes in a nano sized die-cast chassis with art designed by EHX aficionado, Daniel Danger. SUSTAIN controls the amount of sustain and distortion from medium grit to full fuzz fury. TONE adjusts the tone from brash rasp to deep thunder, increasing treble and decreasing bass as it's turned up. VOL sets the overall output of the pedal.

The Big Muff Pi 2 features a first for a Big Muff, silent true bypass footswitching with Latching/Momentary Action. Click the footswitch for normal latching functionality or press and hold the footswitch of a momentary burst of fuzz mayhem!

Features:

- Unique Big Muff Pi circuit design employing 2 Dual Op-Amps
- Artwork by Daniel Danger
- VOL, TONE, and SUSTAIN controls
- True Bypass
- Latching/Momentary footswitch action
- 9V Battery included, adapter optional
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- Circuit: Analog
- Audio: Mono
- Power Supply: 9V battery included (optional 9.6VDC-200mA power adapter not included)
- Dimensions (in): 5.75 x 3.45 x 2.75
- Current Draw: 15mA

Dimensions and Weight in Packaging

Base Item

  • Shipping Weight: 0.69 lbs
  • Shipping Dimensions: 6 x 3 x 3 in
  • Manufacturer Part Number (MPN): BIGMUFF2

Electro-Harmonix Big Muff Pi 2 Fuzz Pedal
Updated April 3, 2026 04:39 by Justin LaForte
Hey everybody, this is Justin at zZounds and these are some things to know about the Electro-Harmonix Big Muff Pi Op-Amp fuzz. This is based on the “lost” circuit from the ’70s, a dual op-amp version of the Big Muff, which gives it that distinct, tighter, more aggressive fuzz character.

Some cool things to know about it are that it actually has a momentary switch function. So not just a usual latching switch—if you hold it down, you can engage a momentary fuzz effect, which is really cool for accents and quick bursts of gain. Another thing to know is that it has true bypass now, along with nice, silent switching.

Those are some things to know about the Electro-Harmonix Big Muff Pi Op-Amp fuzz.
Electro-Harmonix Big Muff Pi 2 Fuzz Pedal

For support or warranty questions, please contact the manufacturer:
Phone: 718-937-7818
Web: https://www.ehx.com/support/

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