Electro-Harmonix Op Amp Big Muff Pi Fuzz Pedal

MSRP: $139.00
1 review
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$96.20

A compact reissue of the late‑’70s IC/V4 Big Muff, this pedal delivers that iconic crushing, sustain‑heavy fuzz beloved by classics like Siamese Dream. Featuring a 3‑stage op‑amp circuit, it produces thick, creamy distortion with a smoother response than traditional transistor units


This pedal can be powered by a 9-volt battery, a Fulltone IPS-9 9-volt adapter, or Fulltone IPS-18 18-volt power supplies.

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Description

Electro-Harmonix Op Amp Big Muff Pi Fuzz Pedal

Billy Corgan and James Iha (Smashing Pumpkins) built an empire on Siamese Dream‘s distinct brand of psychedelia-meets-rock-alternative. A key ingredient to this record’s iconic sound, as guitarists today know, is Billy’s famed late-’70s V4 IC Big Muff. Now, Corgan and EHX have carefully bottled the tone and response of the original in the Electro-Harmonix Op-Amp Big Muff Pi. This pedal faithfully captures the fuzz-laden and explosive textures of Billy’s op-amp equipped ’70s Muff. Controls for Volume, Tone, and Sustain (gain) make it quick to dial in the textures your music demands. Meanwhile, a tone bypass toggle temporarily bypasses the pedal’s tone circuit for maximum output and aggression. The new compact size and die-cast durability preserve the Siamese Dream tone for a new generation of fuzz fans.

Electro-Harmonix Op Amp Big Muff Pi Fuzz Pedal Features:

  • Captures Billy Corgan (Smashing Pumpkins)’s iconic fuzz sound
  • Based on the late-’70s op-amp equipped V4 IC Big Muff Pi
  • Easier-traveling compact size
  • Durable die-cast construction
  • True bypass switching preserves tone between uses
  • Independent Volume, Tone, and Sustain (gain) controls
  • Tone bypass switch temporarily toggles the tone circuit for added power
  • Powered by a 9-volt battery (included) or standard 9-volt adapter (sold separately)

Based on the late-’70s op-amp Muff

Earlier transistor-loaded Muffs are regarded for their smoother bite and more controlled sustain. Yet a key ingredient in Corgan’s Siamese Dream tone was the op-amp-loaded, late-’70s Big Muff Pi. The EHX Op-Amp Muff captures the grit and gain of Corgan’s classic in a compact new pedalboard-friendly footprint.

Plenty of sweet spots in these pots

Corgan’s Siamese Dream tone was rarely a single full-range performance, but more commonly, the stacking of 5, 10, or 20 guitar parts at varying stages of gain and contour. The EHX Op-Amp Big Muff Pi affords limitless options for tone stacking, from hot snarling leads to plaintive, lingering pedal-point drones. A feature that Sweetwater reviewers particularly enjoyed was the tone bypass switch, which temporarily bypasses your settings for bursts of raw power.

Additional information
Weight 1 lbs
Dimensions 6 × 4 × 2 in
Pedal Type

Fuzz

Analog/Digital

Analog

Inputs

1 x 1/4″

Outputs

1 x 1/4″

Bypass Switching

True Hardwire

True Bypass

Yes

Power Source

9V DC Power Supply – Not Included

Power Usage

5mA

Manufacturer

Electro-Harmonix

Manufacturer Part Number

OPAMPBM

Country Of Origin

Warranty

2 Years

Reviews (1)
5 1 review
Performance 5.0
Price 5.0
Sound 5.0
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GTIN 683274012087 SKU: OPAMPBM Categories: , Brand: