The Keeley Phat Mod is a Keeley overdrive pedal, currently around $126.65. Close alternatives include the MXR Timmy Overdrive and the Catalinbread SFT: Sapphire. It pairs well with the Fender Prosonic and the Ampeg Rocket Bass RB-115 Combo Bass Amp.
Keeley Phat Mod
Keeley · pedal
The Keeley Phat Mod is a premium modification of a popular distortion pedal circuit by Robert Keeley, incorporating component upgrades and a phat switch that adds low-end weight and harmonic density to the modified circuit. The phat modification enhances the original circuit with expanded bass response and improved harmonic character. Keeley's modification expertise reflects the brand's foundational approach to pedal circuit improvement.
- bass
- response
- harmonic
- presence
- essential character
- fullness
- original circuit
- harmonic density
Price updated Aug 27, 2026
Amps that pair well with the Keeley Phat Mod
Fender Prosonic
amplifier
24% matchFender Prosonic's warm balances out the bright tone
Ampeg Rocket Bass RB-115 Combo Bass Amp
Ampeg
24% matchThe Phat Mod's harmonic-rich presence boost pushes the RB-115's massive preamp into real character.
Dumble Steel String Singer
Dumble
tonal matchRun Dumble Steel String Singer after it and the bright edge settles into something more smooth
Gibson GA-50
Gibson
tonal matchWhere this leans bright, Gibson GA-50 answers back warm
Orange BT1000H Terror Bass 1000-Watt Bass Amp
Orange
tonal matchOrange BT1000H Terror Bass 1000-Watt Bass Amp leans warm right where the bright tone needs it
Orange Terror Bass
Orange
tonal matchOrange Terror Bass leans warm right where the bright tone needs it
Orange Little Bass Thing
Orange
tonal matchRun Orange Little Bass Thing after it and the bright edge settles into something more warm
Fuchs ODS II Custom 25/50 Combo
Fuchs
tonal matchRun Fuchs ODS II Custom 25/50 Combo after it and the bright edge settles into something more warm
Pedals that stack with the Keeley Phat Mod
Catalinbread SFT
Catalinbread
19% matchCatalinbread SFT's warm balances out the bright tone
Behringer Chorus Symphony
Behringer
18% matchBehringer Chorus Symphony's smooth voice goes after Keeley Phat Mod in the signal chain — it's not there to compete with Keeley Phat Mod's own harmonically rich character
Donner Lax Comp
Donner
17% matchDonner Lax Comp leans toward transparent, and that's a real, usable character to pair with
One Control Lingonberry Overdrive
One Control
16% matchWhere this leans bright, One Control Lingonberry Overdrive answers back warm
Line 6 DL4 Delay Modeler
pedal
11% matchKeep Keeley Phat Mod's harmonically rich voice out front: Line 6 DL4 Delay Modeler goes after Keeley Phat Mod in the signal chain so its warm voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Caroline Guitar Company Kilobyte
Caroline Guitar Company
11% matchRun Caroline Guitar Company Kilobyte after Keeley Phat Mod in the signal chain, clear of Keeley Phat Mod's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Orange - Vintage Distortion
Orange
tonal matchWhere this leans bright, Orange - Vintage Distortion answers back warm
SolidGoldFX Commodore Breaker Overdrive
Solidgoldfx
tonal matchSolidGoldFX Commodore Breaker Overdrive leans smooth right where the bright tone needs it
Cheaper alternatives
Boutique & premium upgrades
Keeley Super AT Mod Overdrive Limited Edition
Keeley
65% similarityShared character: response, bass
Friedman BE-OD
Friedman
64% similarityShared character: presence, response, bass
Browne Amplification The Atom Nashville Overdrive
Browne Amplification
63% similarityShared character: presence, response, bass
Greer Lightspeed Organic Overdrive
Greer
62% similarityShared character: presence
Walrus Audio PRS Horsemeat
Walrus Audio
62% similarityShared character: bass
Carl Martin Crunch Drive
Carl Martin
89% similaritysimilar tone character
Similar charactersee all similar tone character →
MXR Timmy Overdrive
MXR
64% similarityShared character: presence
Catalinbread SFT: Sapphire
Catalinbread
88% similaritysimilar tone character
JHS Kirkland Custom Boost
pedal
88% similaritysimilar tone character
Catalinbread SFT
Catalinbread
88% similaritysimilar tone character
Catalinbread Skewer
Catalinbread
88% similaritysimilar tone character
Fender Santa Ana Overdrive
Fender
87% similaritysimilar tone character
See all alternatives to the Keeley Phat Mod (cheaper + boutique) →
Questions people ask
What are good alternatives to the Keeley Phat Mod?+
The closest matches in character are the MXR Timmy Overdrive, the Catalinbread SFT: Sapphire, the JHS Kirkland Custom Boost. Budget picks: Electro-Harmonix Soul Food, Rarebird effects Hatchet Overdrive. Boutique upgrades: Keeley Super AT Mod Overdrive Limited Edition, Friedman BE-OD, Browne Amplification The Atom Nashville Overdrive.
What pairs well with the Keeley Phat Mod?+
Strong matches from rig and tone-complementarity evidence: Fender Prosonic, Ampeg Rocket Bass RB-115 Combo Bass Amp, Dumble Steel String Singer — Fender Prosonic's warm balances out the bright tone.
How much does the Keeley Phat Mod cost?+
Around $126.65 (live listing price, updated Aug 27, 2026).