Electro Harmonix Deluxe Big Muff Pi 2

The Big Muff "circuit 2" goes Deluxe

The Deluxe Big Muff Pi 2 features a dual operational amplifier version, known for its more aggressive grain, more "forward" mids, while retaining that infinite sustain feel on held notes that made the Big Muff legendary. The idea here is not to make a tame fuzz, but a controllable fuzz: you get the Big Muff DNA, plus the modern tools that were often missing from historic circuits on stage.
Within the Electro-Harmonix range, this Deluxe Big Muff Pi 2 clearly positions itself as a fuzz platform: a very characteristic core sound, but with enough flexibility to adapt to your guitar, amp, tuning, and place in the mix, without having to stack three pedals around it to make it "usable" in all situations.

A fuzz for riffs, leads, and big guitar walls

This pedal is aimed at guitarists who like it when things overflow but want to keep control over the final result. From alternative rock to stoner, from grunge to shoegaze, including very thick ambient textures, the Deluxe Big Muff Pi 2 can lay down a harmonic carpet as well as propel a lead above the band.
Live, its major strength is the footswitchable MIDS section: you can switch from a broad, scooped fuzz (ideal for layers) to a fuzz that cuts through instantly (ideal for solos) without changing your basic settings. In the studio, the BLEND and GATE quickly become addictive for dialing attack, controlling silences, and recording a dense but clear fuzz, even on tight rhythm takes.

Advanced controls: sculpt the spectrum, from velvet to sharp

Classic controls VOLUME, TONE, and SUSTAIN are present: output level, bass/treble balance, and amount of fuzz/sustain. Where the Deluxe Big Muff Pi 2 changes the game is with BLEND (mix of clean and saturated signals) which allows you to keep the pick attack and chord clarity even when SUSTAIN is high.
The integrated GATE sets the noise gate threshold: perfect for cutting hiss between phrases, tightening clean stops, and preventing the pedal from "breathing" too much with single-coil pickups or high-gain setups. The 3-position WICKER switch (Off, Half, Full) adds two levels of high-frequency opening to gain brightness and presence, useful with dark amps, humbuckers, or very bass-heavy settings.
The MIDS section is footswitch-activatable and works like a parametric EQ: MIDS FREQ selects the frequency to work on, MIDS LEVEL boosts or scoops, and the Q Hi/Lo switch chooses a wide (more musical, "rounder") or narrow (more incisive, ideal for targeting a precise area) action. Creative bonus: the EXP input accepts an expression pedal or voltage control (CV) to control the mid frequency in real time and achieve very expressive wah-fuzz effects.
Regarding bypass, the pedal uses a buffered bypass (useful to preserve highs over long cables). The two footswitches are "soft" switches and can operate in latching (on/off) or momentary (held press for a fuzz burst or a temporary mid boost/cut), a real plus for accents and transitions.

The sound

The Deluxe Big Muff Pi 2 delivers a thick, harmonically rich fuzz, with that "singing sustain" and natural compression that immediately gives a sense of power. The grain remains very musical on single-note lines and becomes colossal on chords and power chords, especially when letting the lows breathe.
Thanks to BLEND, you can choose between a fully saturated fuzz (compact and creamy wall) and a more articulated fuzz where the clean signal brings definition and attack. The WICKER lets you go from a dark, velvety texture to a more open, brighter fuzz that stands out better on an already loaded amp. Finally, the MIDS section is the anti-"disappearing in the mix" weapon: a well-placed small boost often transforms a big fuzz into a perfectly readable lead tone without losing the Big Muff identity.

Technical specifications

Effects	EQ, Distortion / Overdrive / Fuzz, Distortion, Effects	Type	sector
Technology	Analog	Use	electric guitar
Format	Pedal	Color	Red
EQ	Parametric

Potentiometers	VOLUME, TONE, SUSTAIN, BLEND, GATE	Output	6.35mm Jack (output impedance: 500 ohms)
Parametric MIDS section	MIDS LEVEL, MIDS FREQ	EXP input	6.35mm Jack for expression pedal (TRS) or CV control (TS)
MIDS Q switch	HIGH / LOW	Accepted CV range	0 to 5 V
WICKER 3-position switch	OFF / HALF / FULL	Compatible expression pedals	impedance from 10 kOhms to 100 kOhms (wiper on TRS tip)
EFFECT footswitch	effect activation (on/off or momentary mode)	Internal input gain trim pot	up to +12 dB (adds bite and definition before the fuzz stage)
MIDS footswitch	mids section activation (on/off or momentary mode)	Size	5.75 x 4.75 x 2.5 inches (approx. 146 x 121 x 64 mm)
Bypass	buffered bypass	Required power supply	9 VDC (center negative)
Input	6.35mm Jack (input impedance: 2 MOhms)	Consumption	45 mA