Maker
Electro-Harmonix
American effects pedal maker
Electro-Harmonix (EHX) is an American maker of effects pedals for electric guitar and bass, founded by Mike Matthews in 1968 in New York City. An early pioneer of affordable stompbox design, the company is best known for the Big Muff Pi fuzz, along with influential models such as the Small Stone phaser, Memory Man delay, and Electric Mistress flanger. After closing in 1984, the brand was revived in the 1990s and continues to design and build a broad pedal range in New York.
Models
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Electro-Harmonix Cathedral
Effects pedal · United States
The Electro-Harmonix Cathedral is a true-stereo digital reverb with seven reverb types, including two spring modes, hall, room, plate, reverse, and the Grail Flerb, plus a two-second digital echo mode. It offers up to two seconds of pre-delay, tap tempo, infinite-reverb hold, and eight presets.
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Electro-Harmonix Op-Amp Big Muff Pi
Effects pedal · United States
The Electro-Harmonix Op-Amp Big Muff Pi reissues the late-1970s op-amp (IC, or V4) Big Muff, which uses op-amps and three gain stages rather than the four-transistor circuit of the classic version. The result is a huge, crushing, scooped fuzz favored for wall-of-sound distortion and heavy rhythm and lead playing, now in a compact die-cast chassis with true bypass and a Tone Bypass switch.
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Electro-Harmonix Deluxe Electric Mistress
Effects pedal · United States
The Electro-Harmonix Deluxe Electric Mistress is an analog flanger known for rich, resonant flanging and its unique Filter Matrix mode, which freezes the sweep to create static, metallic comb-filtered tones. Offered in a compact die-cast enclosure with true bypass, it keeps the classic circuit while running on a standard power supply.
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Electro-Harmonix Q-Tron+
Effects pedal · United States
The Electro-Harmonix Q-Tron+ is an envelope-controlled filter whose swept cutoff tracks the dynamics of the player's attack for organic auto-wah and funk-filter sounds. It offers low-pass, band-pass, and high-pass modes with Drive and Q controls, plus an effects loop and response options for expressive filter sweeps.
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Electro-Harmonix Deluxe Memory Man
Effects pedal · United States
The Electro-Harmonix Deluxe Memory Man is a bucket-brigade analog delay offering up to roughly 550 ms of warm echo together with lush chorus and expressive vibrato modulation. Its analog repeats soften and saturate with each pass for organic, musical echoes, making it a classic ambient and rhythmic delay.
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Electro-Harmonix Canyon
Effects pedal · United States
The Electro-Harmonix Canyon is a compact multifunction delay and looper offering eleven modes, including digital echo, modulated, multi-tap, reverse, tape, octave and shimmer delays, a Deluxe Memory Man emulation, sample-and-hold, reverb-plus-delay, and a looper with up to 62 seconds of recording. Tap tempo and secondary controls pack deep functionality into a small enclosure.
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Electro-Harmonix POG2
Effects pedal · United States
The Electro-Harmonix POG2 is a polyphonic octave generator that adds up to four mixable octave and sub-octave voices (-2, -1, +1, +2) plus the dry signal, with detune, an Attack control for volume-swell effects, a resonant low-pass filter, and eight programmable presets for instant recall.
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Electro-Harmonix Small Stone
Effects pedal · United States
The Electro-Harmonix Small Stone is an analog phase shifter first designed in 1974 by David Cockerell. Built around operational transconductance amplifiers, it is a four-stage phaser with a single Rate control and a Color switch that adds feedback for a deeper, more resonant sweep, giving the rich, swirling phasing heard across decades of records.
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Electro-Harmonix Holy Grail
Effects pedal · United States
The Electro-Harmonix Holy Grail is a compact reverb pedal offering three modes: a faithful Spring emulation, a lush Hall, and the distinctive Flerb, which combines flanging with reverb for an ethereal wash. A single mix knob and mode switch keep it simple and immediate.
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Electro-Harmonix Soul Food
Effects pedal · United States
The Electro-Harmonix Soul Food is a transparent overdrive created as an affordable take on the Klon Centaur. Its boosted internal power rails provide ample headroom and definition for touch-responsive, low-coloration drive, with Volume, Treble, and Drive controls and selectable true or buffered bypass.
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Electro-Harmonix Green Russian Big Muff Pi
Effects pedal · United States
The Electro-Harmonix Green Russian Big Muff Pi is an authentic reissue of the cult-classic mid-1990s Russian-made Big Muff, delivering thick, creamy fuzz with a devastating low end suited to sludge, doom, and stoner rock. It carries the vintage-correct army-green chassis with Volume, Tone, and Sustain controls and true bypass in a pedalboard-friendly enclosure.
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Electro-Harmonix Big Muff Pi
Effects pedal · United States
The Electro-Harmonix Big Muff Pi is a fuzz/distortion/sustainer pedal first released in 1969, defined by smooth, heavily saturated fuzz with long, violin-like sustain. Controlled by simple Volume, Tone, and Sustain knobs, it has shaped rock guitar from Hendrix and Santana to Pink Floyd and The White Stripes, and anchors a long-running family of reissues and variants.
Sources
Categories
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Effects pedals
Guitar and bass effects — overdrive, distortion, fuzz, delay, reverb, modulation, and more, in pedal, rack, and multi-effects formats.
Representative model
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Electro-Harmonix Big Muff Pi
Effects pedal · United States
The Electro-Harmonix Big Muff Pi is a fuzz/distortion/sustainer pedal first released in 1969, defined by smooth, heavily saturated fuzz with long, violin-like sustain. Controlled by simple Volume, Tone, and Sustain knobs, it has shaped rock guitar from Hendrix and Santana to Pink Floyd and The White Stripes, and anchors a long-running family of reissues and variants.