The Keeley Moon is a Keeley fuzz pedal. Close alternatives include the Electro-Harmonix Flatiron Fuzz and the Electro-Harmonix Triangle Big Muff Pi. It pairs well with the Marshall Bluesbreaker and the Mesa Boogie Mark I.

Keeley Moon

Keeley · pedal

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.

What stands out

  • “The op-amp character contributes a specific coloration and spatial quality”

    — from the reviews

  • “Part of Keeley's ambient and reverb effects lineup, providing lush atmospheric reverb with American build quality”

    — from the community notes

  • “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”

    — from the listing

  • “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”

    — from the listing

  • “Keeley reverb designs are valued for their musical quality and reliable construction”

    — from the community notes

  • op amp
  • reverb
  • american
  • lush
  • fuzz
  • eq
  • midrange
  • scooped mids

Genres the Keeley Moon is commonly used in

  • Electronic
  • Shoegaze
  • Post-Rock
  • Ambient
  • Stoner Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Grunge
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Keeley Moon

Marshall Bluesbreaker

Marshall

27% match

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)

Marshall Bluesbreaker leans warm right where the bright tone needs it

Comes later in the signal chain

Mesa Boogie Mark I

Mesa Boogie

23% match
$1466.59via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Stack Mesa Boogie Mark I on top and a scooped tone tightens toward mid-forward

Comes later in the signal chain

Ampeg V-4

Ampeg

tonal match
$559via Reverb

Comes later in the signal chain

Feed a scooped signal into Ampeg V-4 and it comes out closer to mid-forward

Ceriatone HRM 50

Ceriatone

tonal match

Comes later in the signal chain

Stack Ceriatone HRM 50 on top and a scooped tone tightens toward mid-forward

Ceriatone Overtone Special HRM Bluesmaster 50

Ceriatone

tonal match

Comes later in the signal chain

Ceriatone Overtone Special HRM Bluesmaster 50 pushes a scooped tone toward mid-forward

Ampeg BA 108

Ampeg

tonal match

Comes later in the signal chain

Ampeg BA 108 takes that scooped character and pushes it toward mid-forward

Magnatone 460

Magnatone

tonal match

Comes later in the signal chain

Feed a scooped signal into Magnatone 460 and it comes out closer to mid-forward

Blackstar Unity 120

Blackstar

tonal match
$450via Reverb

Comes later in the signal chain

Blackstar Unity 120 pushes a scooped tone toward mid-forward

Pedals that stack with the Keeley Moon

Cusack Music Screamer

Cusack Music

21% match

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Feed a scooped signal into Cusack Music Screamer and it comes out closer to mid-forward

Comes earlier in the signal chain

Strymon Zelzah -Dimensional Phaser

Strymon

21% match
$335.42via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Put Strymon Zelzah -Dimensional Phaser after Keeley Moon in the signal chain, clear of Keeley Moon's own gain stage

Comes later in the signal chain

Beetronics Octahive

Beetronics

20% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → octave)

Put Beetronics Octahive in front and the fuzzy tone leans further toward octave

Wampler Cory Wong

Wampler

18% match
$266.38via Reverb

fills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (scooped → mid-forward)

Keeley Moon leans toward op-amp, and that's a real, usable character to pair with

Comes earlier in the signal chain

J. Rockett Clockwork Echo

J Rockett

14% match

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Put J. Rockett Clockwork Echo after Keeley Moon in the signal chain, clear of Keeley Moon's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Fairfield Circuitry Meet Maude

Fairfield Circuitry

14% match
$333.94via Reverb

sits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)

Keep Fairfield Circuitry Meet Maude after Keeley Moon in the signal chain, clear of Keeley Moon's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

MXR CAE Wah

MXR

tonal match
$121.09via Reverb

Comes earlier in the signal chain

Put MXR CAE Wah in front of Keeley Moon: a wah tracks picking dynamics best on the raw signal

JAM Pedals RetroVibe Mk.4

Jam Pedals

tonal match

Comes later in the signal chain

Stack JAM Pedals RetroVibe Mk.4 on top and a scooped tone tightens toward mid-forward

Alternativessee all similar tone character →

Electro-Harmonix Flatiron Fuzz

Electro-Harmonix

57% similarity
$70.32via Reverb

Shared character: big muff, filter, volume

Electro-Harmonix Triangle Big Muff Pi

Electro-Harmonix

57% similarity
$86.93via Reverb

Shared character: big muff, dark, volume

Dunlop Way Huge Doom Hammer Fuzz, model WM45

Dunlop

57% similarity

Shared character: big muff, high gain settings, fuzz

Wren and Cuff Box of War OG

Wren And Cuff

55% similarity
$296.83via Reverb

Shared character: dark, big muff, volume

SONICAKE Fazy Cream

Sonicake

55% similarity
$39.98via Reverb

Shared character: big muff, dark, thickness

EarthQuaker Devices Gary V1 Fuzz

EarthQuaker Devices

55% similarity

Shared character: big muff, thickness, fuzz

Electronic Audio Experiments Glaive Octave Fuzz

Electronic Audio Experiments

53% similarity
$249via Reverb

Shared character: filter, high gain settings

Wren and Cuff Eye See Pi Fuzz

Wren And Cuff

53% similarity
$265via Reverb

Shared character: big muff, thickness, fuzz

Electro-Harmonix Russian Big Muff Pi Fuzz Distortion

Electro-Harmonix

52% similarity
$76.18via Reverb

Shared character: high gain settings, big muff, dark

Tech 21 SansAmp Character Plus English Muffy

Tech 21

52% similarity

Shared character: big muff, thickness, fuzz

EarthQuaker Devices Hizumitas-Pba

EarthQuaker Devices

51% similarity

Shared character: big muff, high gain settings, thickness

Electro-Harmonix Big Muff Pi with Tone Wicker

pedal

51% similarity
$123.92via Reverb

Shared character: big muff, filter, volume

See all alternatives to the Keeley Moon (cheaper + boutique) →

Questions people ask

What are good alternatives to the Keeley Moon?+

The closest matches in character are the Electro-Harmonix Flatiron Fuzz, the Electro-Harmonix Triangle Big Muff Pi, the Dunlop Way Huge Doom Hammer Fuzz, model WM45.

What pairs well with the Keeley Moon?+

Strong matches from rig and tone-complementarity evidence: Marshall Bluesbreaker, Mesa Boogie Mark I, Ampeg V-4 — Marshall Bluesbreaker leans warm right where the bright tone needs it.

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