The ProCo Lil Rat is a Proco distortion pedal, currently around $88. Close alternatives include the Peavey Rock Master Preamp and the Catalinbread CB-Distortion. It pairs well with the Friedman Dirty Shirley and the Peavey Invective 120.
ProCo Lil Rat
Proco · pedal
The ProCo Lil' Rat packs the full ProCo Rat 2 circuit into a micro-sized enclosure, using identical components to deliver the same range of tones that have defined the Rat lineage for decades, from smooth low-gain overdrive through gritty crunch to aggressive, fuzz-like saturation. Distortion, Filter, and Volume controls work exactly as on a full-size Rat, with the Filter knob cutting high frequencies as it's turned clockwise to darken or brighten the tone. It excels at arena-rock rhythm tones and soaring leads, working equally well with single coils and humbuckers. It suits players wanting the complete classic Rat distortion character in a crowded-pedalboard-friendly footprint rather than a scaled-down or simplified version.
What stands out
“LM308-based distortion with the Rat's distinctive aggressive character suits rock, punk, and indie applications”
— from the reviews
“The ProCo Lil' Rat packs the full ProCo Rat 2 circuit into a micro-sized enclosure, using identical components to deliver the same range of tones that have defined the Rat lineage for decades, from smooth low-gain overdrive through gritty c…”
— from the listing
“Rock, punk, and alt players who want the Rat's distinctive tone in compact format find the Lil Rat a practical option”
— from the community notes
“ProCo's compact Rat, providing the classic Rat distortion character in a smaller enclosure”
— from the community notes
“Distortion, Filter, and Volume controls work exactly as on a full-size Rat, with the Filter knob cutting high frequencies as it's turned clockwise to darken or brighten the tone”
— from the listing
Trade-offs
“proco build quality is solid and road-worthy”
— from the community notes
- distortion
- aggressive
- rock
- punk
- gritty
- low gain
- crunch
- smooth
Price updated Oct 24, 2026
Genres the ProCo Lil Rat is commonly used in
- Rock
- Indie
- Punk
- Metal
cited
Inferred from shared tonal signals, not a stated genre tag. - Pop Punk
cited
Inferred from shared tonal signals, not a stated genre tag. - Grunge
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the ProCo Lil Rat
Friedman Dirty Shirley
Friedman
24% matchgain stackingStacks two gain stages for more saturation than either produces alone. (low gain → high gain)
Friedman Dirty Shirley leans this low gain tone toward high gain, which it doesn't make on its own
Comes later in the signal chain
Peavey Invective 120
Peavey
22% matchgain stackingStacks two gain stages for more saturation than either produces alone. (low gain → high gain)
Peavey Invective 120 leans this low gain tone toward high gain, which it doesn't make on its own
Comes later in the signal chain
Synergy SL2 Module
Synergy
tonal matchComes later in the signal chain
Into a low gain tone, Synergy SL2 Module brings a pull toward high gain that's missing
Ceriatone 2202H
Ceriatone
tonal matchComes later in the signal chain
Into a low gain tone, Ceriatone 2202H brings a pull toward high gain that's missing
Ceriatone HRM 50
Ceriatone
tonal matchComes later in the signal chain
Feed a crunchy signal into Ceriatone HRM 50 and it comes out closer to mid-forward
Ceriatone Overtone Special HRM Bluesmaster 50
Ceriatone
tonal matchComes later in the signal chain
Ceriatone Overtone Special HRM Bluesmaster 50 takes that crunchy character and pushes it toward mid-forward
EVH 000
Evh
tonal matchComes later in the signal chain
EVH 000 leans this low gain tone toward high gain, which it doesn't make on its own
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt
Mesa Boogie
tonal matchComes later in the signal chain
Mesa/Boogie JP-2C John Petrucci Signature 60/100-Watt leans this low gain tone toward high gain, which it doesn't make on its own
Pedals that stack with the ProCo Lil Rat
Walrus Audio EB-10 Black Edition
Walrus Audio
25% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (crunchy → clean boost)
Walrus Audio EB-10 Black Edition takes that crunchy character and pushes it toward clean boost
Comes earlier in the signal chain
MXR Micro Amp
MXR
24% matchpushes an already-dirty tonePushes an already-dirty tone harder and tightens it up. (crunchy → clean boost)
MXR Micro Amp takes that crunchy character and pushes it toward clean boost
Comes earlier in the signal chain
Caroline Guitar Company Parabola State Tremolo
Caroline Guitar Company
19% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor.
Put Caroline Guitar Company Parabola State Tremolo after ProCo Lil Rat in the signal chain, clear of ProCo Lil Rat's own gain stage
Comes later in the signal chain
Wampler Cory Wong
Wampler
17% matchshapes the dynamic responseShapes how the tone responds to picking dynamics rather than its frequency or gain.
What ProCo Lil Rat brings here leans toward aggressive — that's worth building a pairing around
Comes earlier in the signal chain
Walrus Audio Mako D1 High-Fidelity Stereo Delay V1
Walrus Audio
10% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Keep Walrus Audio Mako D1 High-Fidelity Stereo Delay V1 after ProCo Lil Rat in the signal chain, clear of ProCo Lil Rat's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
Electro-Harmonix Memory Boy Analog Delay
Electro-Harmonix
10% matchsits in the right chain slotPlaced for where it does its job cleanly in the chain, not for a tonal interaction with the anchor. (fuzzy → modulated)
Electro-Harmonix Memory Boy Analog Delay's analog warmth voice goes after ProCo Lil Rat in the signal chain — it's not there to compete with ProCo Lil Rat's own aggressive character — goes in the amp's FX loop (or last, into a clean amp)
Comes later in the signal chain
NuX Drive Core Deluxe
Nux
tonal matchComes earlier in the signal chain
NuX Drive Core Deluxe leans this low gain tone toward high gain, which it doesn't make on its own
Matthews Effects Architect
Matthews Effects
tonal matchComes earlier in the signal chain
Matthews Effects Architect leans this low gain tone toward high gain, which it doesn't make on its own
Cheaper alternatives
SONICAKE Shark
Sonicake
56% similarityShared character: crunch, distortion, aggressive playing
T-Rex Nitros
T Rex
55% similarityShared character: distortion, aggressive playing
TC Electronic Grand Magus Distortion
TC Electronic
53% similarityShared character: distortion
Fender Hammertone Metal
Fender
93% similaritysimilar tone character
Boutique & premium upgrades
Dunlop MXR Dookie Drive 30th Anniversary DD30
Dunlop
63% similarityShared character: distortion, aggressive playing, high gain settings
Maxon SD-9 Sonic Distortion
Maxon
60% similarityShared character: fuzz, distortion, aggressive playing
Black Arts Toneworks Forest
Black Arts Toneworks
59% similarityShared character: fuzz, overdrive
RHC Audio Ydrat
Rhc Audio
59% similarityShared character: filter, fuzz, distortion
Black Country Customs Monolith
Black Country Customs
55% similarityShared character: high gain settings, crunch, smooth
ProCo Sterling Vermin
Proco
54% similarityShared character: filter, fuzz, distortion
Similar charactersee all similar tone character →
Peavey Rock Master Preamp
Peavey
55% similarityShared character: aggressive playing, high gain settings
Catalinbread CB-Distortion
Catalinbread
55% similarityShared character: high gain settings, crunch, distortion
MXR M193 GT-OD Overdrive
MXR
53% similarityShared character: crunch, smooth, distortion
SONICAKE Shark High Gain Classic British Crunch
Sonicake
53% similarityShared character: crunch, distortion, high gain settings
Sonicake Rude Mouse Distortion
Sonicake
53% similarityShared character: high gain settings, fuzz, smooth
ProCo RAT 2
Proco
95% similaritysimilar tone character
See all alternatives to the ProCo Lil Rat (cheaper + boutique) →
Questions people ask
What are good alternatives to the ProCo Lil Rat?+
The closest matches in character are the Peavey Rock Master Preamp, the Catalinbread CB-Distortion, the MXR M193 GT-OD Overdrive. Budget picks: SONICAKE Shark, T-Rex Nitros, TC Electronic Grand Magus Distortion. Boutique upgrades: Dunlop MXR Dookie Drive 30th Anniversary DD30, Maxon SD-9 Sonic Distortion, Black Arts Toneworks Forest.
What pairs well with the ProCo Lil Rat?+
Strong matches from rig and tone-complementarity evidence: Friedman Dirty Shirley, Peavey Invective 120, Synergy SL2 Module — Friedman Dirty Shirley leans this low gain tone toward high gain, which it doesn't make on its own.
How much does the ProCo Lil Rat cost?+
Around $88 (live listing price, updated Oct 24, 2026).
Compare
- vs ProCo RAT 2
- vs Dunlop MXR Jail Guitar Doors Overdrive JGD2
- vs EarthQuaker Devices Zoar V1 Dynamic Audio Grinder