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

Amps that pair well with the Catalinbread Formula No.55

Pedals that stack with the Catalinbread Formula No.55

Soldano SLO

Soldano

19% match
$119.99via Reverb

Into 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% match
$114.30via Reverb

fills 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% match
$59via Reverb

shapes 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% match
$199via 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.

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% match
$140via 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.

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% match
$209.51via 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.

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 match
$29.95via Reverb

Comes 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 match
$203.84via Reverb

Comes later in the signal chain

Into a transparent tone, Dr. Scientist Frazz Dazzler V2 brings a pull toward fuzzy that's missing

Cheaper alternatives

Boutique & premium upgrades

Similar charactersee all similar tone character →

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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