Electro-Harmonix Percolator vs Keeley Moon
The Electro-Harmonix Percolator and the Keeley Moon are both pedals sharing fuzzy, harmonically rich, bright. The Electro-Harmonix Percolator leans octave and transparent. The Keeley Moon leans lush and full.
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Blended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.44% — somewhat different
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Derived from overlapping tonal signals across both listings.- fuzzy
- harmonically rich
- bright
Keeley Moon
Keeley · pedal
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.The Electro-Harmonix Percolator is an analog harmonic saturator, overdrive, and fuzz pedal that reimagines the rare 1970s Interfax Harmonic Percolator circuit, a cult favorite made famous by Steve Albini use on stage and in the studio. It centers on Harmonics and Balance controls for gain and output level, plus a Bias knob that shifts the circuit from smooth transistor-like drive to pseudo-octave and gated Velcro-style fuzz, and a Fuzz/Drive switch that toggles between standard clipping and a lifted-diode mode for a rawer, more organic character. Built on asymmetrical, even-order harmonic clipping, it produces tones ranging from chewy, crunchy overdrive to ripping, unstable fuzz textures rather than a single smooth gain stage. It suits alternative, noise rock, and experimental players wanting an unconventional, harmonically rich drive pedal distinct from typical Tube Screamer or Big Muff voicings, at an affordable price point.
The Keeley Moon Op Amp Fuzz is a high-gain op-amp Big Muff-style fuzz, extracted from the quad-op-amp Muff circuit inside Keeley's Gilmour-inspired Dark Side workstation and beefed up as a standalone pedal. It is thick, massively saturated and bass-heavy, with a wealth of harmonic content and a wall-of-sound sustain that makes thinner fuzzes sound weedy alongside it. Volume, Filter and Fuzz controls are joined by a three-way voicing switch offering classic scooped mids, a flat EQ, and a Full setting with pronounced midrange for cutting through a band. The Filter control has a notably wide usable range, running from dark and woolly to sharp and cutting. Suits players after heavy, doom-leaning and Gilmour-style op-amp Muff tones.
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Genres this gear is documented as being used in.- Noise Rock
- Experimental
- Alternative Rock
- Electronic
- Shoegaze
- Post-Rock
- Ambient
- octave
- transparent
- smooth
- saturated
- lush
- full
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Occasions this gear suits — judged per model, or derived from its wattage, connectivity and category.- Busking
- Live
- Practice
- Studio