The Mad Professor - Little Green Wonder HW is a Mad Professor overdrive pedal, currently around $370. Close alternatives include the Fulltone OCD V2 and the EWS Eric Gales Brute Drive. It pairs well with the Mesa Boogie Mark I and the Synergy SL2 Module.

Mad Professor - Little Green Wonder HW

Mad Professor · pedal

The Mad Professor Little Green Wonder HW is the hand-wired version of the acclaimed Mad Professor Little Green Wonder transparent overdrive from Finnish boutique manufacturer Mad Professor, delivering transparent, touch-sensitive low-to-mid gain overdrive with an organic, amp-like breakup character in a hand-wired boutique format. The LGW is considered one of the finest transparent overdrive designs, valued for its ability to enhance guitar tone without heavy coloration.

transparent
boutique
overdrive
touch
breakup
organic
drive

Price updated Aug 27, 2026

Genres the Mad Professor - Little Green Wonder HW is commonly used in

Classic Rock
Country
Blues
Indie Rock
^cited
Inferred from shared tonal signals, not a stated genre tag.
Alternative
^cited
Inferred from shared tonal signals, not a stated genre tag.
Americana
^cited
Inferred from shared tonal signals, not a stated genre tag.

Amps that pair well with the Mad Professor - Little Green Wonder HW

Mesa Boogie Mark I

Mesa Boogie

19% match

$1494.37via Reverb

The transparent tone has headroom to spare — Mesa Boogie Mark I gives it mid-forward to fill it with

Synergy SL2 Module

Synergy

tonal match

Run Synergy SL2 Module into that transparent platform and it finally gets some high gain

Friedman BE-Mini Head

Friedman

tonal match

$203.48via Reverb

Run Friedman BE-Mini Head into that transparent platform and it finally gets some high gain

Egnater Tweaker 88 Head

Egnater

tonal match

Into a transparent tone, Egnater Tweaker 88 Head brings the low gain it's missing

Ceriatone 2202H

Ceriatone

tonal match

Run Ceriatone 2202H into that transparent platform and it finally gets some high gain

Friedman Jose LTD

Friedman

tonal match

Friedman Jose LTD's high gain fills in what this transparent tone doesn't make on its own

Hughes & Kettner Warp 7

Hughes & Kettner

tonal match

$937.50via Reverb

Run Hughes & Kettner Warp 7 into that transparent platform and it finally gets some high gain

Bad Cat Lynx 50

Bad Cat

tonal match

Run Bad Cat Lynx 50 into that transparent platform and it finally gets some high gain

Pedals that stack with the Mad Professor - Little Green Wonder HW

Walrus Audio Eons

Walrus Audio

21% match

$218.42via Reverb

Walrus Audio Eons's low gain fills in what this transparent tone doesn't make on its own

Fjord Fuzz Berserk

Fjord Fuzz

21% match

The transparent tone has headroom to spare — Fjord Fuzz Berserk gives it fuzzy to fill it with

EarthQuaker Devices Grand Orbiter

EarthQuaker Devices

16% match

$199via Reverb

EarthQuaker Devices Grand Orbiter's low gain voice goes after Mad Professor - Little Green Wonder HW in the signal chain — it's not there to compete with Mad Professor - Little Green Wonder HW's own transparent character

Vox Valvenergy Silk Drive

Vox

12% match

$156.35via Reverb

Vox Valvenergy Silk Drive leans toward smooth, and that's a real, usable character to pair with

Boss RV-5 Digital Reverb

pedal

8% match

$79.99via Reverb

Keep Mad Professor - Little Green Wonder HW's transparent voice out front: Boss RV-5 Digital Reverb goes after Mad Professor - Little Green Wonder HW in the signal chain so its spring voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Old Blood Noise Endeavors BL-44 Reverse

Old Blood Noise Endeavors

8% match

$179via Reverb

Keep Mad Professor - Little Green Wonder HW's transparent voice out front: Old Blood Noise Endeavors BL-44 Reverse goes after Mad Professor - Little Green Wonder HW in the signal chain so its ambient voice doesn't muddy it — goes in the amp's FX loop (or last, into a clean amp)

Tone City Dry Martini

Tone City

tonal match

$52.86via Reverb

Tone City Dry Martini is voiced for a clean amp's front end — Mad Professor - Little Green Wonder HW gives it exactly that

Fender Hammertone Overdrive

Fender

tonal match

$59.99via Reverb

Fender Hammertone Overdrive's own voicing points at a clean amp's front end, and Mad Professor - Little Green Wonder HW delivers it

Cheaper alternatives

Walrus Audio Voyager

Walrus Audio

73% similarity

$149.95via Reverb

Shared character: guitar_tone, touch, transparent

Mooer Micro PreAmp 010 (Two Rock Coral)

Mooer

71% similarity

$54.75via Reverb

Shared character: touch, blues_players, overdrive

Origin Effects Deluxe55 Tweed Recreation

Origin Effects

70% similarity

$330.90via Reverb

Shared character: touch, amp, blues_players

Walrus Audio Warhorn

Walrus Audio

68% similarity

$199via Reverb

Shared character: touch, transparent, blues_players

Vox Valvenergy Mystic Edge

Vox

68% similarity

$158.58via Reverb

Shared character: touch, blues_players, overdrive

Keeley Klon Centaur-Style Overdrive

Keeley

68% similarity

$225.28via Reverb