The Professional's Source Since 1973
  • Help
Ask Our Experts800.606.6969
Hello, Log InAccount & Orders
Video Chat with a Pro Audio Expert - Live

Electro-Harmonix OP Amp Big Muff Pi Distortion/Sustainer Pedal

BH #ELOPAMPBM • MFR #OPAMPBM
Print
Electro-Harmonix OP Amp Big Muff Pi Distortion/Sustainer Pedal
Key Features
  • Reissue of Iconic 1970s Fuzz Pedal
  • Recreation of Original V4 Circuit
  • Volume and Fuzz Knobs
  • Switchable Tone Control
The Electro Harmonix Op-Amp Big Muff is a reissue of a classic fuzz pedal from the 1970s. It aims to give you the iconic and sustaining distortion of that era. Three main controls are at your disposal including a volume knob for overall level, a tone knob to shape your timbre, and of course the fuzz knob with which you can introduce sweet distortion into your signal.
More Details
Special Order
Expected availability: 2-4 Weeks
  • This item cannot be canceled or returned.
Free Standard Shipping
Protect Your Gear
Add a protection plan from $16.00
Ask an Expert
800.606.6969

Electro-Harmonix OP Amp Big Muff Pi Overview

The Electro Harmonix Op-Amp Big Muff is a reissue of a classic fuzz pedal from the 1970s. It aims to give you the iconic and sustaining distortion of that era. Three main controls are at your disposal including a volume knob for overall level, a tone knob to shape your timbre, and of course the fuzz knob with which you can introduce sweet distortion into your signal.

The original pedal relied on op-amps rather than transistors to achieve its signature, needling timbre. This pedal aims to recreate that original V4 circuit as faithfully as possible even as it adds a couple of tweaks to the design. For instance, the tone switch, which takes the tone knob out of the circuit altogether, no longer affects your overall output level. This is a departure from earlier iterations.

The Op-Amp Big Muff Pi utilizes true bypass circuitry, to keep your tone pristine when it is bypassed. The pedal ships with a 9V battery, which can be replaced by unscrewing the backplate and accessing the battery therein. It also works with a 9V AC power adapter, which is available separately.

Key Features at a Glance
Volume Knob: This sets the overall the output level.

Fuzz Knob: This knob adjusts the amount of sustain and distortion.

Tone Knob: This control facilitates a range of sounds, from high treble to deep bass. As you turn the knob clockwise, the treble increases and bass decreases.

Tone Switch: This switch removes or adds the tone control from the circuit. This switch has been improved over the original Op-Amp Big Muff, as now the volume remains the same in both positions.

Bypass/Engage Footswitch: The Footswitch toggles between effect and bypass modes.

UPC: 683274012087

Electro-Harmonix OP Amp Big Muff Pi Specs

I/O
1/4" instrument input, phone type
1/4" instrument output, phone type
Controls
Fuzz knob
Volume knob
Tone knob
Tone switch
Bypass/engage footswitch
Bypass
True bypass circuitry
Power
Battery: 9 V
Power Supply: 9 VDC (available separately)
Dimensions
2.8 x 4.5 x 2.1" / 7.0 x 11.4 x 5.3 cm
Weight
Not specified by manufacturer
Packaging Info
Package Weight
0.67 lb
Box Dimensions (LxWxH)
5.7 x 3.5 x 2.85"

Electro-Harmonix OP Amp Big Muff Pi Reviews

See any errors on this page? Let us know