With original late-70s Op-Amp Big Muffs selling for exorbitant prices, Mike Matthews decided to take the power to the people and reissue the classic pedal at a price that players could afford! The circuitry of the new EHX Op-Amp Big Muff Pi —sometimes also referred to as the IC or V4 Big Muff— has been faithfully re-created while several practical enhancements have been added including a compact, die-cast chassis and true bypass switching.

“The Op-Amp Big Muff was popularized by the brilliant Billy Corgan who first used it on the Smashing Pumpkins’ epic 1993 album Siamese Dream. After he was videotaped playing and talking about the reissue, Billy stated: ‘The magic’s still in the box, I can still get what I’m looking for!’” – Mike Matthews

The pedal relies on op-amps rather than transistors and three gain stages rather than four, to create its signature sound. It’s a sound that’s been described by noted Big Muff collector and historian, Kit Rae, as: “a huge, crushing Big Muff sound with more crunch… great for grungy, wall-of-sound distortion, heavy rhythm playing and heavy leads.”

A faithful reissue of the original classic circa 1978
Iconic sound and vibe that’s coveted by guitarists
Controls for Tone, Sustain and Volume, plus a Tone Bypass switch
True bypass switching for maximum signal integrity in bypass mode
Rugged, compact, die-cast package… pedalboard friendly
9V battery included

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OP AMP BIG MUFF PI

The EHX 720 Stereo Looper is a powerful looping tool with 12 minutes of stereo recording time, 10 loop memory banks, and creative performance functions. Its simple-to-use design makes it an easy and effective to use in both live and practice situations.

The 720 records in high-quality stereo for use with stereo effects or even use with two instruments. A second footswitch can be programmed to stop loop playback or toggle on/off the built-in Reverse and 1/2 Speed playback effects. The programmable Fadeout mode applys an automatic fade when playback is stopped.

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Review by looperpedalreviews.com

Review by Chris Corfield, guitarworld.com

Manual

720 Looper

Initially, I was looking for an Electro-Harmonix Big Muff. The Big Muff is widely known and accepted into guitarists pedal boards, but one problem associated with the Big Muffs, are the size!

Review by Guitar Jar 

Review by SHAi

Double Muff

This re-creation of the original 1970’s Clone Theory is renowned for its very edgy chorus. Stereo outputs provide lush chorus and vibrato with a sparkling wash and liquid elegance.

The EHX Clone Theory’s depth and rate controls swing from one extreme to the other, giving the user an entire realm of possibility for tone. Use both stereo outputs and completely surround yourself with sweet warm Electro-Harmonix tone.

Stereo outputs
Tough and compact die-cast chassis
9V battery included

Review by ultimate-guitar.com

Review by Chris Vinnicombe, musicradar.com

Stereo Clone Theory

Switch your signal between two different amplifiers, two different pedal boards or two different speaker cabinets. Flexible channel switching built into a compact die-cast case.

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