The Catalinbread Formula No.55 is a Catalinbread overdrive pedal, currently around $179.99. Close alternatives include the Strymon Iridium and the DigiTech DOD Looking Glass Signature Designer Distortion. It pairs well with the Diezel VH4 4-Channel 100-Watt and the Revv Generator 100P MkIII 3-Channel Head.
Catalinbread Formula No.55
Catalinbread · pedal
The Catalinbread Formula No. 55 is an amp-voiced overdrive pedal from the Portland boutique effects builder, designed to capture the tone and response of specific vintage amplifier settings in the tradition of their Formula pedal series. Like other Catalinbread Formula pedals, it models the circuit behavior and harmonic characteristics of a target amplifier front end rather than functioning as a generic drive pedal. It delivers warm, natural saturation with the feel and dynamic response of a pushed tube amplifier. Suited for blues, classic rock, and studio players seeking an authoritative amp-in-a-box overdrive tone.
What stands out
“Appreciated as another entry in Catalinbread's well-regarded amp-modeling drive series, valued for its natural saturation character and dynamic response that prioritizes amp feel over tone-shaping versatility”
— from the community notes
“Suited for blues, classic rock, and studio players seeking an authoritative amp-in-a-box overdrive tone”
— from the listing
“Amp-simulation character is consistent with Catalinbread high standard for preamp-style overdrives, with warm, natural saturation and real dynamic range that rewards varied playing approach”
— from the reviews
“Players who prefer clearly labeled controls and predictable generic tone shaping may find the amp-referential design approach”
— from the reviews
“The circuit responds to picking dynamics in a way that feels more like a well-tuned amplifier than a typical pedal”
— from the reviews
- dynamic response
- overdrive
- saturation
- natural
- classic rock
- amp in
- amp feel
- exact tonal character
Price updated Oct 23, 2026
Genres the Catalinbread Formula No.55 is commonly used in
- Classic Rock
- Blues
- Alternative
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Catalinbread Formula No.55
Diezel VH4 4-Channel 100-Watt
Diezel
20% matchDiezel VH4 4-Channel 100-Watt leans this transparent tone toward high gain, which it doesn't make on its own
Comes later in the signal chain
Revv Generator 100P MkIII 3-Channel Head
Revv
20% matchInto a transparent tone, Revv Generator 100P MkIII 3-Channel Head brings a pull toward high gain that's missing
Comes later in the signal chain
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Into a transparent tone, Synergy SL2 Module brings a pull toward high gain that's missing
Friedman Small Box 50W EL34 Amp Head
Friedman
tonal matchComes later in the signal chain
Friedman Small Box 50W EL34 Amp Head leans this transparent tone toward high gain, which it doesn't make on its own
ENGL Special Edition E670
Engl
tonal matchComes later in the signal chain
ENGL Special Edition E670 leans this transparent tone toward high gain, which it doesn't make on its own
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Into a transparent tone, Ceriatone 2202H brings a pull toward high gain that's missing
Bogner Snorkler 50
Bogner
tonal matchComes later in the signal chain
Bogner Snorkler 50 leans this transparent tone toward medium gain, which it doesn't make on its own
Bad Cat Lynx 50
Bad Cat
tonal matchComes later in the signal chain
Into a transparent tone, Bad Cat Lynx 50 brings a pull toward high gain that's missing
Pedals that stack with the Catalinbread Formula No.55
Soldano SLO
Soldano
19% matchInto a transparent tone, Soldano SLO brings a pull toward high gain that's missing
Comes later in the signal chain
Electro-Harmonix 1973 Violet Ram's Head Big Muff Pi V2
Electro-Harmonix
18% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (transparent → mid-forward)
Into a transparent tone, Electro-Harmonix 1973 Violet Ram's Head Big Muff Pi V2 brings a pull toward mid-forward that's missing
Comes later in the signal chain
Maestro Arcas Comp
Maestro
14% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
What Catalinbread Formula No.55 brings here leans toward dynamic — that's worth building a pairing around
Comes earlier in the signal chain
EarthQuaker Devices Grand Orbiter V3
EarthQuaker Devices
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.
Put EarthQuaker Devices Grand Orbiter V3 after Catalinbread Formula No.55 in the signal chain, clear of Catalinbread Formula No.55's own gain stage
Comes later in the signal chain
MXR M169 Carbon Copy Analog Delay
MXR
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put MXR M169 Carbon Copy Analog Delay after Catalinbread Formula No.55 in the signal chain, clear of Catalinbread Formula No.55's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Walrus Audio Slö Multi-Texture Reverb
Walrus Audio
6% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Keep Walrus Audio Slö Multi-Texture Reverb after Catalinbread Formula No.55 in the signal chain, clear of Catalinbread Formula No.55's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Donner Big Mouth Distortion
Donner
tonal matchComes later in the signal chain
Into a transparent tone, Donner Big Mouth Distortion brings a pull toward high gain that's missing
Dr. Scientist Frazz Dazzler V2
Dr Scientist
tonal matchComes later in the signal chain
Into a transparent tone, Dr. Scientist Frazz Dazzler V2 brings a pull toward fuzzy that's missing
Cheaper alternatives
One Control Fluorescent Orange
One Control
60% similaritySimilar role and voicing
Catalinbread StarCrash SideArm
Catalinbread
55% similaritySimilar voicing: full
Vertex Ultra-Phonix
Vertex
51% similarityShared character: natural, warm, classic rock
Orange Getaway Driver
Orange
50% similarityShared character: raw, warm, classic rock
Mooer 020 Blueno Micro Preamp
Mooer
49% similarityShared character: response
Vertex Ultraphonix HRM
Vertex
90% similaritysimilar tone character
Boutique & premium upgrades
Universal Audio Uafx Lion '68 Super Lead Amp
Universal Audio
52% similarityShared character: response, classic rock, studio
Cusack Music Project 34
Cusack Music
52% similarityShared character: natural, warm, classic rock
Crowther Prunes
Crowther
90% similaritysimilar tone character
Beetronics OV-LE-Uva
Beetronics
90% similaritysimilar tone character
Similar charactersee all similar tone character →
Strymon Iridium
Strymon
55% similarityShared character: response
DigiTech DOD Looking Glass Signature Designer Distortion
Digitech
54% similarityShared character: tone shaping, natural, response
Benson Amps Benson The Amp, a Milkman Sound and Benson Amps collaboration
Benson Amps
53% similarityShared character: natural, warm
Cornerstone Antique V3
Cornerstone
53% similarityShared character: classic rock, overdrive
Peavey Session‑LTD 400 Preamp
Peavey
52% similaritySimilar role and voicing
Crowther Hot Cake
Crowther
52% similarityShared character: response, overdrive
See all alternatives to the Catalinbread Formula No.55 (cheaper + boutique) →
Questions people ask
What are good alternatives to the Catalinbread Formula No.55?+
The closest matches in character are the Strymon Iridium, the DigiTech DOD Looking Glass Signature Designer Distortion, the Benson Amps Benson The Amp, a Milkman Sound and Benson Amps collaboration. Budget picks: One Control Fluorescent Orange, Catalinbread StarCrash SideArm, Vertex Ultra-Phonix. Boutique upgrades: Universal Audio Uafx Lion '68 Super Lead Amp, Cusack Music Project 34, Crowther Prunes.
What pairs well with the Catalinbread Formula No.55?+
Strong matches from rig and tone-complementarity evidence: Diezel VH4 4-Channel 100-Watt, Revv Generator 100P MkIII 3-Channel Head, Synergy SL2 Module — Diezel VH4 4-Channel 100-Watt leans this transparent tone toward high gain, which it doesn't make on its own.
How much does the Catalinbread Formula No.55 cost?+
Around $179.99 (live listing price, updated Oct 23, 2026).
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