The Mad Professor Simble Overdrive MK2 is a Mad Professor overdrive pedal, currently around $130. Close alternatives include the Keeley El Rey Dorado and the Menatone The Red Snapper mini. It pairs well with the PRS HX 100 Head and the Marshall Super Bass.
Mad Professor Simble Overdrive MK2
Mad Professor · pedal
The Mad Professor Simble Overdrive Mk2 is the second-generation version of Mad Professor's flagship overdrive, an Alexander Dumble-inspired circuit that captures the warm, singing, harmonically complex breakup associated with Dumble's legendary custom amplifiers. The Simble is one of the most acclaimed affordable Dumble-inspired overdrives in the boutique market, and the Mk2 refinements address specific tonal and control criticisms of the original with circuit improvements and enhanced usability.
- overdrive
- warm
- boutique
- singing
- consistent
- breakup
- dynamic
- natural
Price updated Aug 27, 2026
Genres the Mad Professor Simble Overdrive MK2 is commonly used in
- Alternative Rock
- Blues
cited
Inferred from shared tonal signals, not a stated genre tag. - Classic Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Country
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Mad Professor Simble Overdrive MK2
PRS HX 100 Head
PRS
33% matchInto the HX 100's full, tube-driven headroom, the Simble's warm breakup opens up into singing sustain.
Marshall Super Bass
Marshall
33% matchThe Super Bass's pedal-platform headroom gives the Simble's warm, singing breakup room to open up fully.
Amplified Nation Steel String Singer 50W Head
Amplified Nation
tonal matchAmplified Nation Steel String Singer 50W Head's own voicing points at Dumble-style amps, and Mad Professor Simble Overdrive MK2 delivers it
Amplified Nation Trem-Drive Deluxe Combo
Amplified Nation
tonal matchAmplified Nation Trem-Drive Deluxe Combo's own voicing points at Dumble-style amps, and Mad Professor Simble Overdrive MK2 delivers it
Amplified Nation Trem-Drive Deluxe Head
Amplified Nation
tonal matchAmplified Nation Trem-Drive Deluxe Head's own voicing points at Dumble-style amps, and Mad Professor Simble Overdrive MK2 delivers it
Bludotone Custom Amp
Bludotone
tonal matchMad Professor Simble Overdrive MK2 leans into Dumble-style amps, precisely the platform Bludotone Custom Amp wants
Synergy OS module
Synergy
tonal matchSynergy OS module is voiced for Dumble-style amps — Mad Professor Simble Overdrive MK2 gives it exactly that
Peavey MAX 150 150W 1x12 Bass Combo
Peavey
tonal matchWhere this leans warm, Peavey MAX 150 150W 1x12 Bass Combo answers back bright
Pedals that stack with the Mad Professor Simble Overdrive MK2
Klon Centaur
Klon
24% matchSimble's warm, singing breakup stacks consistently onto the Klon's midrange boost for a smoother, more sustained drive.
ProCo RAT 2
Proco
22% matchStack the RAT's cutting drive after the Simble for a two-stage build from warm breakup into tighter distortion.
MXR Dyna Comp
MXR
19% matchThe Dyna Comp evens out pick attack before the Simble's warm, singing breakup takes over.
Walrus Audio Lillian
Walrus Audio
15% matchLet the Lillian's subtle analog phasing trail the Simble's warm breakup for gentle movement on top of the drive.
Dawner Prince Boonar
Dawner Prince
11% matchBehind the Simble's warm, singing overdrive, the Boonar's tube-driven repeats trail a harmonically complex signal instead of a bare one. — goes in the amp's FX loop (or last, into a clean amp)
Boss DD-200 Digital Delay
Boss
10% matchThe Simble's warm, singing boutique breakup feeds the DD-200's shimmering digital repeats a driven signal instead of a clean one. — goes in the amp's FX loop (or last, into a clean amp)
Catalinbread Formula 55
Catalinbread
tonal matchInto Mad Professor Simble Overdrive MK2, Catalinbread Formula 55 is right at home: it's built around Dumble-style amps
Sonicake MiniLane Blue Skreamer Overdrive
Sonicake
tonal matchSonicake MiniLane Blue Skreamer Overdrive is voiced for Dumble-style amps — Mad Professor Simble Overdrive MK2 gives it exactly that
Cheaper alternatives
Boutique & premium upgrades
Mad Professor Simble Predriver
Mad Professor
70% similarity“The Mad Professor Simble Predriver is a PCB version of a precursor or companion to the Simble Overdrive, providing Dumble-inspired preamp”
Friedman Motor City Drive Overdrive
Friedman
93% similaritysimilar tone character
Greer Amps Royal Velvet
Greer
92% similaritysimilar tone character
Mad Professor Supreme Overdrive
Mad Professor
91% similaritysimilar tone character
Free The Tone FM-1V Fire Mist Overdrive
Free The Tone
91% similaritysimilar tone character
Similar charactersee all similar tone character →
Keeley El Rey Dorado
Keeley
69% similarityShared character: singing, natural, warm
Menatone The Red Snapper mini
Menatone
68% similarityShared character: singing, warm, overdrive
Vox Joe Satriani Signature Ice 9 Overdrive
Vox
67% similarityShared character: singing, overdrive
Dunlop Cry Baby SW95 Slash Wah
Dunlop
66% similarityShared character: singing
JHS Violet Lari Basilio Signature Distortion
JHS Pedals
66% similarityShared character: natural, warm, overdrive
MXR M193 GT-OD Overdrive
MXR
66% similarityShared character: singing, natural, warm
See all alternatives to the Mad Professor Simble Overdrive MK2 (cheaper + boutique) →
Questions people ask
What are good alternatives to the Mad Professor Simble Overdrive MK2?+
The closest matches in character are the Keeley El Rey Dorado, the Menatone The Red Snapper mini, the Vox Joe Satriani Signature Ice 9 Overdrive. Budget picks: Electro-Harmonix Spruce Goose. Boutique upgrades: Mad Professor Simble Predriver, Friedman Motor City Drive Overdrive, Greer Amps Royal Velvet.
What pairs well with the Mad Professor Simble Overdrive MK2?+
Strong matches from rig and tone-complementarity evidence: PRS HX 100 Head, Marshall Super Bass, Amplified Nation Steel String Singer 50W Head — Into the HX 100's full, tube-driven headroom, the Simble's warm breakup opens up into singing sustain..
How much does the Mad Professor Simble Overdrive MK2 cost?+
Around $130 (live listing price, updated Aug 27, 2026).
Compare
- vs Friedman Motor City Drive Overdrive
- vs Browne Amplification The Carbon V1
- vs Greer Amps Royal Velvet