The Electro-Harmonix Flatiron Fuzz is an Electro-Harmonix fuzz pedal, currently around $70.32. Close alternatives include the Electro-Harmonix Green Russian Big Muff and the Keeley Moon. It pairs well with the Friedman Dirty Shirley and the Fender Vibrolux 6G11.
Electro-Harmonix Flatiron Fuzz
Electro-Harmonix · pedal
The Electro-Harmonix Flatiron Fuzz is a classic op amp powered fuzz and distortion based on the hard clipping op amp circuit famously associated with early ProCo Rat and op amp Big Muff style tones. It has three controls, Volume for output, Drive for sustain and distortion, and a Filter that acts as a movable low pass cutoff to shape brightness. At lower drive it stays fairly clean with a pleasing mild distortion, while higher settings deliver thick, meaty, aggressive fuzz distortion. Compact and straightforward, it suits rock, punk, alternative and garage players who want a versatile op amp fuzz distortion ranging from light grit to thick, cutting saturation with flexible tone shaping.
What stands out
“The Electro-Harmonix Flatiron Fuzz is a classic op amp powered fuzz and distortion based on the hard clipping op amp circuit famously associated with early ProCo Rat and op amp Big Muff style tones”
— from the listing
“Used for heavy alternative rock, shoegaze, and grunge lead and rhythm playing where the specific op-amp Muff compression and density suit the genre”
— from the community notes
“At lower drive it stays fairly clean with a pleasing mild distortion, while higher settings deliver thick, meaty, aggressive fuzz distortion”
— from the listing
“The compact enclosure makes it more pedalboard-friendly than larger vintage Big Muff formats”
— from the community notes
“op-amp-powered big muff fuzz with a more compressed”
— from the community notes
Trade-offs
“midrange-present character compared to transistor-based big muff versions”
— from the community notes
“players who prefer transistor-based big muff warmth or the more open”
— from the community notes
- fuzz
- op amp
- big muff
- rock
- distortion
- compressed
- midrange
- rhythm
Price updated Oct 22, 2026
Genres the Electro-Harmonix Flatiron Fuzz is commonly used in
- Punk
- Shoegaze
- Grunge
- Alternative Rock
- Classic Rock
- Rock
Amps that pair well with the Electro-Harmonix Flatiron Fuzz
Friedman Dirty Shirley
Friedman
24% matchgain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → high gain)
Friedman Dirty Shirley layers high gain onto an already mid-forward signal
Comes later in the signal chain
Fender Vibrolux 6G11
amplifier
24% matchsits 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)
Fender Vibrolux 6G11 layers modulated onto an already fuzzy signal
Comes later in the signal chain
Gibson Les Paul LP-1 Preamp
Gibson
tonal matchComes later in the signal chain
Put Gibson Les Paul LP-1 Preamp in front and the fuzzy tone leans further toward modulated
Magnatone 510
Magnatone
tonal matchComes later in the signal chain
Put Magnatone 510 in front and the fuzzy tone leans further toward modulated
Pedals that stack with the Electro-Harmonix Flatiron Fuzz
Fulltone OF-2 Octafuzz
Fulltone
24% matchsits 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)
Fulltone OF-2 Octafuzz stacks octave on top of the fuzzy already here
Catalinbread Giygas
Catalinbread
24% matchsits 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)
Run fuzzy into Catalinbread Giygas for more octave on top
Comes earlier in the signal chain
JAM Pedals Retrovibe mk3
Jam Pedals
23% matchsits 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 JAM Pedals Retrovibe mk3 after Electro-Harmonix Flatiron Fuzz in the signal chain, clear of Electro-Harmonix Flatiron Fuzz's own gain stage
Comes later in the signal chain
Electro-Harmonix Memory Boy Analog Delay
Electro-Harmonix
15% matchsits 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 Electro-Harmonix Flatiron Fuzz's fuzzy voice out front: Electro-Harmonix Memory Boy Analog Delay goes after Electro-Harmonix Flatiron Fuzz in the signal chain so its analog warmth voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Electro-Harmonix Deluxe Memory Man
Electro-Harmonix
15% matchsits 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 Electro-Harmonix Flatiron Fuzz's fuzzy voice out front: Electro-Harmonix Deluxe Memory Man goes after Electro-Harmonix Flatiron Fuzz in the signal chain so its modulated voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Chase Bliss Clean
Chase Bliss Audio
12% matchsits 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)
Chase Bliss Clean's own modulated character is the real reason this is worth trying
Comes earlier in the signal chain
Matthews Effects Architect
Matthews Effects
tonal matchComes earlier in the signal chain
Matthews Effects Architect stacks clean boost on top of the fuzzy already here
NuX Drive Core Deluxe
Nux
tonal matchComes earlier in the signal chain
NuX Drive Core Deluxe stacks clean boost on top of the fuzzy already here
Boutique & premium upgrades
Wren and Cuff Box of War Small Foot Fuzz
Wren And Cuff
56% similarityShared character: big muff, sustain, volume
Fairfield Circuitry 900 Fuzz
Fairfield Circuitry
55% similarityShared character: big muff, sustain, compression
Electro-Harmonix Pocket Metal Muff
Electro-Harmonix
54% similarityShared character: alternative, distortion, lead
Fuzzrocious 420 Fuzz
Fuzzrocious
53% similarityShared character: sustain, thickness, fuzz
EarthQuaker Devices Hoof Hybrid Fuzz
EarthQuaker Devices
53% similarityShared character: big muff, bright, sustain
Electro-Harmonix Big Muff Pi with Tone Wicker
pedal
52% similarityShared character: distortion, big muff, filter
Similar charactersee all similar tone character →
Electro-Harmonix Green Russian Big Muff
Electro-Harmonix
59% similarityShared character: big muff, sustain, volume
Keeley Moon
Keeley
57% similarityShared character: big muff, filter, volume
Electro-Harmonix Russian Big Muff Pi Fuzz Distortion
Electro-Harmonix
57% similarityShared character: warm, big muff, sustain
Electro-Harmonix Triangle Big Muff Pi
Electro-Harmonix
55% similarityShared character: big muff, bright, sustain
JHS x Electro-Harmonix Big Muff Pi 2
JHS Pedals
55% similarityShared character: big muff, sustain, middle
JHS Smiley
JHS Pedals
53% similarityShared character: sustain, volume, fuzz
See all alternatives to the Electro-Harmonix Flatiron Fuzz (cheaper + boutique) →
Questions people ask
What are good alternatives to the Electro-Harmonix Flatiron Fuzz?+
The closest matches in character are the Electro-Harmonix Green Russian Big Muff, the Keeley Moon, the Electro-Harmonix Russian Big Muff Pi Fuzz Distortion. Boutique upgrades: Wren and Cuff Box of War Small Foot Fuzz, Fairfield Circuitry 900 Fuzz, Electro-Harmonix Pocket Metal Muff.
What pairs well with the Electro-Harmonix Flatiron Fuzz?+
Strong matches from rig and tone-complementarity evidence: Friedman Dirty Shirley, Fender Vibrolux 6G11, Gibson Les Paul LP-1 Preamp — Friedman Dirty Shirley layers high gain onto an already mid-forward signal.
How much does the Electro-Harmonix Flatiron Fuzz cost?+
Around $70.32 (live listing price, updated Oct 22, 2026).
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