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El Cerrito & Concord
 


Electro-Harmonix OP AMP BIG MUFF Distortion/Sustainer

Billy's Famed Muff Fuzz Tone in a Compact 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.

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 Rockin' Robbie's reviewers particularly enjoyed was the tone bypass switch, which temporarily bypasses your settings for bursts of raw power.

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)

Tech Specs

  • Pedal Type:Fuzz
  • Inputs:1 x 1/4" (instrument)
  • Outputs:1 x 1/4"
  • True Bypass:Yes
  • Power Source:9V DC power supply required (sold separately)
  • Batteries:1 x 9V (included)
  • Power Usage:5mA
  • Height:2.1"
  • Width:2.75"
  • Depth:4.5"
  • Manufacturer Part Number:OPAMPBM

Rockin' Robbie's El Cerrito
11225 San Pablo Ave
El Cerrito, CA 94530
510-232-1000

Mon - Fri: 11am - 6pm 
Sat: 11am - 5pm
Closed Sunday 




Rockin' Robbie's Concord
1835 Colfax Street
Concord, CA 94520
925-687-4220

Mon - Fri: 10am - 6pm 
Sat: 11am - 5pm
Closed Sunday