The Catalinbread Formula 5F6 is a Catalinbread overdrive pedal, currently around $179.99. Close alternatives include the Catalinbread Formula 55 and the Catalinbread Wiio. It pairs well with the Fender Hot Rod Deluxe and the Fender Super Reverb.
Catalinbread Formula 5F6
Catalinbread · pedal
The Catalinbread Formula 5F6 is a Fender 5F6-A Tweed Bassman-inspired overdrive from Portland, Oregon, capturing the warm, wide, bass-forward character of the legendary 4x10 tweed Fender amplifier that is the most directly influential amp design in rock history. The 5F6-A Bassman's output stage configuration directly inspired the original Marshall amplifier design, and the Formula 5F6 replicates its distinctive low-mid emphasis, natural power-stage compression, and balanced harmonic saturation. Associated with country and blues lead tones and the amplifier DNA behind British rock. Made in Portland by Catalinbread.
What stands out
“Associated with country and blues lead tones and the amplifier DNA behind British rock”
— from the listing
“The natural compression of the Bassman output stage is present in the Formula 5F6, with a bloom on lower notes and a sustained richness on upper notes”
— from the reviews
“Fender 5F6-A Tweed Bassman-inspired overdrive capturing the warm, bass-forward character and natural compression of the amp that directly inspired the original Marshall design, with rich low-mid emphasis and balanced harmonic saturation”
— from the community notes
“The 5F6-A Bassman's output stage configuration directly inspired the original Marshall amplifier design, and the Formula 5F6 replicates its distinctive low-mid emphasis, natural power-stage compression, and balanced harmonic saturation”
— from the listing
“The 5F6-A character is audibly different from the 5E3 of the Formula 55 -- warmer, with more low-mid body and a fuller bass response that reflects the Bassman design as a guitar amp”
— from the reviews
- country
- natural compression
- rock
- stage
- harmonic
- saturation
- balanced
- response
Price updated Oct 24, 2026
Genres the Catalinbread Formula 5F6 is commonly used in
- Country
- Rock
- Blues
- Americana
cited
Inferred from shared tonal signals, not a stated genre tag. - Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues Rock
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Catalinbread Formula 5F6
Fender Hot Rod Deluxe
Fender
36% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)
Push the Hot Rod Deluxe's bluesy tube breakup with the Formula 5F6's own natural, harmonic saturation and it turns into real weight.
Comes later in the signal chain
Fender Super Reverb
amplifier
36% matchfills 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 Catalinbread Formula 5F6 and it comes out closer to mid-forward
Comes later in the signal chain
Fender Dual Showman Reverb
amplifier
36% matchThe Dual Showman's warm, responsive clean tone gives the Formula 5F6's natural, harmonic saturation somewhere fuller to push into.
Comes later in the signal chain
Fender Deluxe Reverb
Fender
35% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (warm → bright)
The Formula 5F6 chases the same tweed-amp saturation the Deluxe Reverb's own circuit is built on, so stacking them doubles down on that shared vintage Fender character.
Comes later in the signal chain
Mesa Boogie Lone Star Head
amplifier
33% matchThe Lone Star's vocal, pedal-friendly clean platform gives the Formula 5F6's natural, harmonic saturation plenty of room to bloom.
Comes later in the signal chain
Suhr Bella 1X12 Hand wired Combo New
Suhr
32% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain. (dynamic → compressed)
The dynamic tone has headroom to spare — Catalinbread Formula 5F6 leans it toward compressed to fill it in
Comes later in the signal chain
Fender 'Black Panel' Vibro Champ Amp (1964-1967)
Fender
31% matchfills 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)
What Catalinbread Formula 5F6 brings here leans toward transparent — that's worth building a pairing around
Comes later in the signal chain
Bruno Cowtipper 45
Bruno
31% matchStack the Formula 5F6's natural, harmonic saturation with the Cowtipper 45's own roots-y blues breakup for a fuller, more layered tone.
Comes later in the signal chain
See all 55 amps that pair with the Catalinbread Formula 5F6 →
Pedals that stack with the Catalinbread Formula 5F6
Dr. Scientist Frazz Dazzler
Dr Scientist
31% matchInto a transparent tone, Dr. Scientist Frazz Dazzler brings a pull toward low gain that's missing
Comes later in the signal chain
Wren and Cuff Box of War Small Foot Fuzz
Wren And Cuff
30% matchWren and Cuff Box of War Small Foot Fuzz leans this transparent tone toward high gain, which it doesn't make on its own
Comes later in the signal chain
Boss BD-2W Blues Driver Waza Craft
Boss
24% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)
Catalinbread Formula 5F6's own transparent character is the real reason this is worth trying
Electro-Harmonix Bad
Electro-Harmonix
21% 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 Electro-Harmonix Bad after Catalinbread Formula 5F6 in the signal chain, clear of Catalinbread Formula 5F6's own gain stage
Comes later in the signal chain
Revv Tilt Boost (Shawn Tubbs Signature)
Revv
20% matchfills a frequency gapFills in a frequency range the other side doesn't cover, instead of piling more onto what's already there. (bright → warm)
Catalinbread Formula 5F6's own transparent character is the real reason this is worth trying
Comes earlier in the signal chain
MXR Dyna Comp
MXR
20% 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)
The Dyna Comp's squash evens pick dynamics before the Formula 5F6's own natural, harmonic tweed drive.
Comes earlier in the signal chain
Dawner Prince Boonar
Dawner Prince
13% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
The Boonar's Echorec-style repeats trail the Formula 5F6's natural, harmonic tweed drive into a vintage wash of echo. — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Neunaber Wet Mono Reverb Pedal
pedal
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.
Neunaber Wet Mono Reverb Pedal's pristine voice goes after Catalinbread Formula 5F6 in the signal chain — it's not there to compete with Catalinbread Formula 5F6's own transparent character — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Cheaper alternatives
Catalinbread Formula 51
Catalinbread
57% similarity“Like the Formula 55 and Formula 5F6, the Formula 51 extracts the warmth, bloom, and harmonic character of a Fender amp”
Marshall Guv'nor
Marshall
52% similarityShared character: rich, compression
Catalinbread Dirty Little Secret
Catalinbread
49% similarityShared character: rich, lead
Mad Professor Big Tweedy Drive
Mad Professor
48% similarityShared character: blues players, compression, natural
EarthQuaker Devices Special Cranker V1
EarthQuaker Devices
48% similarityShared character: dark, natural, warm
Fender Hammertone Overdrive
Fender
45% similarityShared character: rich, compression, natural
Boutique & premium upgrades
Similar charactersee all similar tone character →
Catalinbread Formula 55
Catalinbread
71% similarity“The Bassman-specific warmth and low-mid emphasis may feel too warm or dark for players used to the brighter 5E3 Formula 55 character”
Catalinbread Wiio
Catalinbread
57% similarityShared character: warm, middle
JHS Charlie Brown
JHS Pedals
50% similarityShared character: compression, middle, response
Friedman Small Box Overdrive
Friedman
50% similarityShared character: rich, blues players, bass
Dallas Rangemaster Treble Booster
Dallas
49% similarityShared character: rich, compression, warm
Cusack Music Metaplexi
Cusack Music
49% similarityShared character: natural, lead
See all alternatives to the Catalinbread Formula 5F6 (cheaper + boutique) →
Questions people ask
What are good alternatives to the Catalinbread Formula 5F6?+
The closest matches in character are the Catalinbread Formula 55, the Catalinbread Wiio, the JHS Charlie Brown. Budget picks: Catalinbread Formula 51, Marshall Guv'nor, Catalinbread Dirty Little Secret. Boutique upgrades: JAM Pedals TubeDreamer MK2, Blackstar HT-Metal.
What pairs well with the Catalinbread Formula 5F6?+
Strong matches from rig and tone-complementarity evidence: Fender Hot Rod Deluxe, Fender Super Reverb, Fender Dual Showman Reverb — Push the Hot Rod Deluxe's bluesy tube breakup with the Formula 5F6's own natural, harmonic saturation and it turns into real weight..
How much does the Catalinbread Formula 5F6 cost?+
Around $179.99 (live listing price, updated Oct 24, 2026).
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