The Mad Professor Simble Predriver is a Mad Professor overdrive pedal, currently around $229. Close alternatives include the Klon KTR and the Colorsound Power Boost. It pairs well with the Marshall Super Bass and the Orange Rockerverb 50 MkIII 2-Channel 50W Head.
Mad Professor Simble Predriver
Mad Professor · pedal
The Mad Professor Simble Predriver is a PCB version of a precursor or companion to the Simble Overdrive, providing Dumble-inspired preamp and drive character in a more accessible PCB construction format. Mad Professor's Simble platform encompasses the Simble Overdrive and related Dumble-inspired designs aimed at capturing the warmth and harmonic complexity of Alexander Dumble's legendary custom amplifiers.
- pcb
- preamp
- platform
- drive
- overdrive
- warmth
- consistent
- natural
Price updated Aug 27, 2026
Amps that pair well with the Mad Professor Simble Predriver
Marshall Super Bass
Marshall
28% matchMarshall Super Bass leans bright right where the warm tone needs it
Orange Rockerverb 50 MkIII 2-Channel 50W Head
Orange
26% matchRun Orange Rockerverb 50 MkIII 2-Channel 50W Head after it and the warm edge settles into something more bright
Marshall 2203KK Kerry King JCM800
Marshall
tonal matchWhere this leans warm, Marshall 2203KK Kerry King JCM800 answers back bright
Vox Mini SuperBeetle Bass
Vox
tonal matchVox Mini SuperBeetle Bass leans bright right where the warm tone needs it
Díaz CD-100 Amp Head
Diaz
tonal matchDíaz CD-100 Amp Head leans bright right where the warm tone needs it
Blackstar HT Stage 100H MK III Snakeskin
Blackstar
tonal matchInto a transparent tone, Blackstar HT Stage 100H MK III Snakeskin brings the high gain it's missing
Peavey MAX 100
Peavey
tonal matchRun Peavey MAX 100 after it and the warm edge settles into something more bright
Traynor SB110
Traynor
tonal matchRun Traynor SB110 after it and the warm edge settles into something more bright
Pedals that stack with the Mad Professor Simble Predriver
Ashdown Geezer Butler Signature
Ashdown
19% matchAshdown Geezer Butler Signature's low gain fills in what this transparent tone doesn't make on its own
Origin Effects DCX Boost
Origin Effects
19% matchRun Origin Effects DCX Boost into that transparent platform and it finally gets some low gain
Walrus Audio Lillian
Walrus Audio
15% matchWalrus Audio Lillian's bright voice goes after Mad Professor Simble Predriver in the signal chain — it's not there to compete with Mad Professor Simble Predriver's own warm character
Pigtronix Philosopher's Tone Micro
Pigtronix
11% matchWhat Pigtronix Philosopher's Tone Micro brings here leans toward sustaining — that's worth building a pairing around
Boss DD-200 Digital Delay
Boss
8% matchKeep Mad Professor Simble Predriver's warm voice out front: Boss DD-200 Digital Delay goes after Mad Professor Simble Predriver in the signal chain so its analog warmth voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)
Alexander Pedals History Lesson Vol. 2
Alexander Pedals
7% matchRun Alexander Pedals History Lesson Vol. 2 after Mad Professor Simble Predriver in the signal chain, clear of Mad Professor Simble Predriver's own gain stage — goes in the amp's FX loop (or last, into a clean amp)
Tone City Dry Martini
Tone City
tonal matchTone City Dry Martini is voiced for a clean amp's front end — Mad Professor Simble Predriver gives it exactly that
Dunlop MXR Timmy Overdrive, sold as Dunlop CSP027
Dunlop
tonal matchInto Mad Professor Simble Predriver, Dunlop MXR Timmy Overdrive, sold as Dunlop CSP027 is right at home: it's built around a clean amp's front end
Cheaper alternatives
Mad Professor Simble Overdrive MK2
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”
JHS Clover
JHS Pedals
62% similarityShared character: preamp, natural, overdrive
Mad Professor Fire Red Fuzz Hand Wired
Mad Professor
87% similaritysimilar tone character
Blackstar Dept. 10 Boost
Blackstar
85% similaritysimilar tone character
Caroline Guitar Company Icarus V2
Caroline Guitar Company
84% similaritysimilar tone character
Boutique & premium upgrades
Klon Centaur
Klon
62% similarityShared character: warm, overdrive
Analog Man King of Tone
Analog Man
62% similarityShared character: natural, overdrive
Mad Professor - Little Green Wonder HW
Mad Professor
87% similaritysimilar tone character
Origin Effects RevivalDrive Compact
Origin Effects
84% similaritysimilar tone character
Similar charactersee all similar tone character →
Klon KTR
Klon
63% similarityShared character: warm, natural, overdrive
Colorsound Power Boost
Colorsound
63% similarityShared character: warm, preamp, natural
Keeley Super AT Mod Overdrive Limited Edition
Keeley
63% similarityShared character: natural, overdrive
Xotic BB Preamp Andy Timmons Limited Edition Pedal
Xotic
62% similarityShared character: preamp, overdrive
ThorpyFX The Field Marshal Fuzz
ThorpyFX
88% similaritysimilar tone character
Ibanez TS808HWV2 Handwired
Ibanez
87% similaritysimilar tone character
See all alternatives to the Mad Professor Simble Predriver (cheaper + boutique) →
Questions people ask
What are good alternatives to the Mad Professor Simble Predriver?+
The closest matches in character are the Klon KTR, the Colorsound Power Boost, the Keeley Super AT Mod Overdrive Limited Edition. Budget picks: Mad Professor Simble Overdrive MK2, JHS Clover, Mad Professor Fire Red Fuzz Hand Wired. Boutique upgrades: Klon Centaur, Analog Man King of Tone, Mad Professor - Little Green Wonder HW.
What pairs well with the Mad Professor Simble Predriver?+
Strong matches from rig and tone-complementarity evidence: Marshall Super Bass, Orange Rockerverb 50 MkIII 2-Channel 50W Head, Marshall 2203KK Kerry King JCM800 — Marshall Super Bass leans bright right where the warm tone needs it.
How much does the Mad Professor Simble Predriver cost?+
Around $229 (live listing price, updated Aug 27, 2026).
Compare
- vs ThorpyFX The Field Marshal Fuzz
- vs Mad Professor - Little Green Wonder HW
- vs Mad Professor Fire Red Fuzz Hand Wired