The Catalinbread Dirty Little Secret MkIII is a Catalinbread distortion pedal, currently around $134.56. Close alternatives include the Dunlop Way Huge WM31 Supa-Lead Overdrive and the Fulltone OCD. It pairs well with the Laney Ironheart Foundry Leadtop 60W Head and the Friedman Dirty Shirley.

Catalinbread Dirty Little Secret MkIII

Catalinbread · pedal

The Catalinbread CATDLSR is a version of the Portland boutique builder's Dirty Little Secret Marshall-voiced foundation overdrive circuit. The DLS models the tone and response of a cranked British Marshall amplifier, delivering classic rock overdrive with dynamic, amp-like feel. Controls include drive, volume, and a three-band tone stack based on Marshall amplifier EQ alongside a mode switch for Super Lead and Super Bass voicings. Used by blues and classic rock players seeking authentic British overdrive character from a compact pedal.

What stands out

  • “Marshall circuit modeling is convincing and detailed, with both Super Lead and Super Bass modes providing distinct and musically useful tonal characters that suit different playing contexts”

    — from the reviews

  • “The DLS models the tone and response of a cranked British Marshall amplifier, delivering classic rock overdrive with dynamic, amp-like feel”

    — from the listing

  • “Used by blues and classic rock players seeking authentic British overdrive character from a compact pedal”

    — from the listing

  • “The three-band EQ responds like an amplifier tone stack”

    — from the reviews

  • “Extreme high gain settings can , so single-note lead work benefits most from moderate drive settings”

    — from the reviews

Trade-offs

  • “Works best before a tube amplifier to leverage the interactive character of both circuits”

    — from the community notes

  • “super bass mode is praised for its compatibility with fuzz pedals”

    — from the community notes

  • lead
  • classic rock
  • dynamic
  • british
  • overdrive
  • amp like
  • eq
  • interactive character

Price updated Oct 24, 2026

Genres the Catalinbread Dirty Little Secret MkIII is commonly used in

  • Classic Rock
  • Hard Rock
  • Blues
  • Rock
  • Blues Rock
    citedInferred from shared tonal signals, not a stated genre tag.
  • Metal
    citedInferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Catalinbread Dirty Little Secret MkIII

Laney Ironheart Foundry Leadtop 60W Head

Laney

27% match
$319.99via Reverb

gain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → high gain)

Run mid-forward into Laney Ironheart Foundry Leadtop 60W Head for more high gain on top

Comes later in the signal chain

Friedman Dirty Shirley

Friedman

26% match

gain 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

Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt

Mesa Boogie

tonal match

Comes later in the signal chain

Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt layers high gain onto an already mid-forward signal

Hughes & Kettner Coreblade

Hughes & Kettner

tonal match

Comes later in the signal chain

Hughes & Kettner Coreblade layers high gain onto an already mid-forward signal

Hughes & Kettner Warp 7

Hughes & Kettner

tonal match
$901.54via Reverb

Comes later in the signal chain

Put Hughes & Kettner Warp 7 in front and the mid-forward tone leans further toward high gain

Marshall Studio JCM900 SN20H

Marshall

tonal match

Comes later in the signal chain

Marshall Studio JCM900 SN20H layers high gain onto an already mid-forward signal

Mesa/Boogie Stiletto Deuce Stage II

Mesa Boogie

tonal match
$1147.50via Reverb

Comes later in the signal chain

Mesa/Boogie Stiletto Deuce Stage II layers high gain onto an already mid-forward signal

Friedman BE-Mini Head

Friedman

tonal match
$195.67via Reverb

Comes later in the signal chain

Run mid-forward into Friedman BE-Mini Head for more high gain on top

Pedals that stack with the Catalinbread Dirty Little Secret MkIII

Fjord Fuzz Berserk

Fjord Fuzz

17% match

gain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → fuzzy)

Fjord Fuzz Berserk layers fuzzy onto an already mid-forward signal

Comes later in the signal chain

Greer Black Mountain

Greer

16% match
$199via Reverb

gain stackingStacks two gain stages for more saturation than either produces alone. (mid-forward → fuzzy)

Run mid-forward into Greer Black Mountain for more fuzzy on top

Ashdown Studio Compressor

Ashdown

12% match
$181.36via Reverb

shapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)

Catalinbread Dirty Little Secret MkIII's dynamic character and Ashdown Studio Compressor's compressed voice sit in the same lane rather than fighting each other

Comes earlier in the signal chain

Electro-Harmonix Small Stone

Electro-Harmonix

11% match
$230.39via 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.

Run Electro-Harmonix Small Stone after Catalinbread Dirty Little Secret MkIII in the signal chain, clear of Catalinbread Dirty Little Secret MkIII's own gain stage

Comes later in the signal chain

Electro-Harmonix Canyon

Electro-Harmonix

8% 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. (high gain → ambient)

Run Electro-Harmonix Canyon after Catalinbread Dirty Little Secret MkIII in the signal chain, clear of Catalinbread Dirty Little Secret MkIII's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Strymon TimeLine

Strymon

7% match
$414.86via 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.

Run Strymon TimeLine after Catalinbread Dirty Little Secret MkIII in the signal chain, clear of Catalinbread Dirty Little Secret MkIII's own gain stage — goes in the amp's FX loop (or last, into a clean amp)

Comes later in the signal chain

Death By Audio Destruction

Death By Audio

tonal match
$137.70via Reverb

Comes later in the signal chain

Death By Audio Destruction stacks fuzzy on top of the mid-forward already here

Dr. Scientist Frazz Dazzler V2

Dr Scientist

tonal match
$204.36via Reverb

Comes later in the signal chain

Run mid-forward into Dr. Scientist Frazz Dazzler V2 for more fuzzy on top

Cheaper alternatives

Boutique & premium upgrades

Similar charactersee all similar tone character →

See all alternatives to the Catalinbread Dirty Little Secret MkIII (cheaper + boutique) →

Questions people ask

What are good alternatives to the Catalinbread Dirty Little Secret MkIII?+

The closest matches in character are the Dunlop Way Huge WM31 Supa-Lead Overdrive, the Fulltone OCD, the Fulltone OCD V2. Budget picks: Tone City TC-T38 Metal Storm classic British-style high, Electro-Harmonix Spruce Goose, Carl Martin Rock Drive. Boutique upgrades: Friedman IR-J Jake E. Lee Preamp, Origin Effects Halcyon Gold Overdrive, Blackstar HT-Metal.

What pairs well with the Catalinbread Dirty Little Secret MkIII?+

Strong matches from rig and tone-complementarity evidence: Laney Ironheart Foundry Leadtop 60W Head, Friedman Dirty Shirley, Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt — Run mid-forward into Laney Ironheart Foundry Leadtop 60W Head for more high gain on top.

How much does the Catalinbread Dirty Little Secret MkIII cost?+

Around $134.56 (live listing price, updated Oct 24, 2026).

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