The Catalinbread Epoch Bias is a Catalinbread preamp pedal, currently around $168. Close alternatives include the Catalinbread Airstrip CB-Range Overdrive Preamp and the Catalinbread Airstrip. It pairs well with the Revv G2 and the Vox Valvenergy Mystic Edge.
Catalinbread Epoch Bias
Catalinbread · pedal
The Catalinbread Epoch Bias is a variant of the Epoch preamp series based on the Echoplex EP-3 tape echo unit preamp circuit. The original EP-3 Echoplex had a Bias control that affected the preamp character when adjusted, and the Epoch Bias translates this specific tonal variation into pedal format. Delivers the warm, vintage Echoplex preamp coloration and boost that made the EP-3 unit influential in studio recording and classic rock guitar tones. Built by Catalinbread in Portland, Oregon.
What stands out
“The original EP-3 Echoplex had a Bias control that affected the preamp character when adjusted, and the Epoch Bias translates this specific tonal variation into pedal format”
— from the listing
“Use-case wise it suits players who want the EP-3 preamp color with a specific Bias-derived character distinct from the standard Epoch Boost”
— from the community notes
“Delivers the warm, vintage Echoplex preamp coloration and boost that made the EP-3 unit influential in studio recording and classic rock guitar tones”
— from the listing
“The Epoch Bias captures the tonal character of the Echoplex EP-3 preamp with the Bias-adjusted voicing, delivering the specific warm, slightly colored boost that made the EP-3 preamp input a sought-after tonal tool for classic rock and stud…”
— from the community notes
“The Catalinbread Epoch Bias is a variant of the Epoch preamp series based on the Echoplex EP-3 tape echo unit preamp circuit”
— from the listing
- boost
- classic rock
- studio
- tonal character
- recording
- specific bias derived character
- vintage
Price updated Oct 24, 2026
Genres the Catalinbread Epoch Bias is commonly used in
- Classic Rock
Pedals that stack with the Catalinbread Epoch Bias
Revv G2
Revv
9% matchWhat Revv G2 brings here leans toward dynamic — that's worth building a pairing around
Comes earlier in the signal chain
Vox Valvenergy Mystic Edge
Vox
9% matchVox Valvenergy Mystic Edge's own dynamic character is the real reason this is worth trying
Electro-Harmonix Small Stone
Electro-Harmonix
9% matchKeep Electro-Harmonix Small Stone after Catalinbread Epoch Bias in the signal chain, clear of Catalinbread Epoch Bias's own gain stage
Comes earlier in the signal chain
Ashdown Macchiato Compressor Guy Pratt Signature
Ashdown
7% matchAshdown Macchiato Compressor Guy Pratt Signature leans toward compressed, and that's a real, usable character to pair with
Comes earlier in the signal chain
Dunlop - MXR Carbon Copy Deluxe Analog Delay
Dunlop
6% matchKeep Dunlop - MXR Carbon Copy Deluxe Analog Delay after Catalinbread Epoch Bias in the signal chain, clear of Catalinbread Epoch Bias's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Empress Echosystem
Empress
6% matchRun Empress Echosystem after Catalinbread Epoch Bias in the signal chain, clear of Catalinbread Epoch Bias's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Cheaper alternatives
Demon FX Full BB Preamp
Demon Fx
53% similarityShared character: signal chain, boost, studio
Biyang Pre-19 Preamp
Biyang
50% similarityShared character: boost
Bogner Ecstasy Blue Mini Overdrive
Bogner
50% similarityShared character: boost, vintage charm, classic rock
Catalinbread Galileo 4K Foundation Overdrive
Catalinbread
89% similaritysimilar tone character
Catalinbread Sabbra Cadabra Blackout
Catalinbread
88% similaritysimilar tone character
Boutique & premium upgrades
Hudson Electronics AP-II
Hudson Electronics
63% similaritySimilar role and voicing
Electronic Audio Experiments Surveyor Instrument Voicing Preamp
Electronic Audio Experiments
46% similarityShared character: signal chain, studio
Xotic EP-Pro
Xotic
44% similarityShared character: boost
Similar charactersee all similar tone character →
Catalinbread Airstrip CB-Range Overdrive Preamp
Catalinbread
69% similarityShared character: signal chain, recording, boost
Catalinbread Airstrip
Catalinbread
68% similarityShared character: tonal character, signal chain, recording
Tech 21 SansAmp Character Plus Mop Top Liverpool
Tech 21
58% similarityShared character: boost, classic rock
Peavey Session‑LTD 400 Preamp
Peavey
57% similaritySimilar role and voicing
Mooer 007
Mooer
53% similarityShared character: vintage charm, classic rock
Acoustic NUX Stageman Floor NAP-5
Acoustic
51% similaritySimilar role and voicing
See all alternatives to the Catalinbread Epoch Bias (cheaper + boutique) →
Questions people ask
What are good alternatives to the Catalinbread Epoch Bias?+
The closest matches in character are the Catalinbread Airstrip CB-Range Overdrive Preamp, the Catalinbread Airstrip, the Tech 21 SansAmp Character Plus Mop Top Liverpool. Budget picks: Demon FX Full BB Preamp, Biyang Pre-19 Preamp, Bogner Ecstasy Blue Mini Overdrive. Boutique upgrades: Hudson Electronics AP-II, Electronic Audio Experiments Surveyor Instrument Voicing Preamp, Xotic EP-Pro.
What pairs well with the Catalinbread Epoch Bias?+
Strong matches from rig and tone-complementarity evidence: Revv G2, Vox Valvenergy Mystic Edge, Electro-Harmonix Small Stone — What Revv G2 brings here leans toward dynamic — that's worth building a pairing around.
How much does the Catalinbread Epoch Bias cost?+
Around $168 (live listing price, updated Oct 24, 2026).
Compare
- vs Catalinbread Epoch Boost EP-3
- vs Walrus Audio EB-10B
- vs Catalinbread Galileo 4K Foundation Overdrive