Electro-Harmonix has resurrected the rare dual op-amp Big Muff Pi circuit from the 1970s, pairing it with the brand's beloved Tone Wicker features to create one of the most versatile Muff pedals to date.
The Op-Amp Big Muff Pi spent years as more of a myth than a pedal, passed around in forum threads and vintage shop whispers. Electro-Harmonix has dug back into the archives and rebuilt that rare ’70s circuit from the ground up, releasing the Big Muff Pi 2 with Tone Wicker – a pedal that honours the original while giving players significantly more to work with.
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Where the classic Big Muff Pi is known for its smooth, harmonically rich fuzz, the Big Muff Pi 2 carves out its own sonic territory. The dual op-amp circuit delivers a mids-forward bark and a singing sustain with massive amounts of gain, sitting distinctly apart from the original’s character. As EHX founder Mike Matthews describes it, “This creamy fuzz features the long-lost dual op-amp gain circuit from the 1970s!”
The familiar VOL, TONE and SUSTAIN controls keep things intuitive, but two additional switches change things up. The TONE switch removes the tone knob from the circuit entirely, opening up a full-spectrum, unfiltered fuzz that sounds enormous. The three-position WICKER switch progressively opens high-frequency filters in the circuit, adding two levels of extended top-end clarity – a feature that works especially well when the TONE knob is dialled back low.
Between those two switches, the Big Muff Pi 2 covers a whole heap of sonic ground: from thick, saturated fuzz at one end to open, bright and articulate distortion at the other.
One more detail worth highlighting is the soft footswitch, which supports both latching and momentary operation. If you hold it down you’ll get a burst of fuzz on demand. Release it and you’ll be back to your clean signal.
Powered by a 9V battery (included) or an optional 9.6VDC-200mA adapter, the Big Muff Pi 2 with Tone Wicker is compact, straightforward to use, and built around a circuit that players have been chasing for decades.
