mad professor little green wonder

Mad Professor Little Green Wonder Review

This is a Guest Post by Harry Trumper.

mad professor little green wonderFirst off, this is the PCB (Printed Circuit Board) version. You can also get a hand-wired version, which is a lot more pricey! Anyway, the designer of this overdrive, said, “The Little Green Wonder is a TS-style pedal, but one for those who don’t generally like TS-style pedals. The big difference between these two pedals would be headroom, distortion style and distortion depth and treble response, output level, function of tone knob, color, symbol…. they do share a common layout of mechanical components.”

Ease of Use/Features

I love the way this pedal looks. The green paint job is pretty nice. It has three white knobs on the front, located at the top of the pedal. The top left knob is your Volume, the middle knob is your Body knob, and the top right knob is your Drive knob. It has a red LED. If I was being REALLY picky, I’d have preferred a blue LED. But that’s not important! The pedal is powered 9v DC.


This overdrive sounds really great. But the Body knob is where the class of this pedal really starts to shine through. If you turn the knob to the right, it increases the treble. If you turn it to the left, it brings through the mids, and the bass. This is great for me as I like a lot of midrange in my tone, which helps because I play through a Fender Blues Deluxe Reissue, which is an amp with quite a lot of treble. The Drive knob basically adds more gain to your tone, and when you have the Body knob to the left, and the drive up, you can get a real nice crunch tone, and a great tone for lead lines where you want to jump out in the mix!


It seems really well built! The enclosure is tough. The on/off switch seems like it could take a lot of stomping. I’ve had this pedal for about 4 months and it’s not let me down yet, and it’s still on my board!

Value for Money

To be honest, the PCB version does enough for me, so I’d suggest grabbing that one. Apparently, it isn’t much different in sound to the Hand-Wired version.

Customer Service

I haven’t had to use it yet. Mad Professor are a Finnish company so I’m not entirely sure about how easy it is to get a hold of them yet!


A lovely overdrive with a crisp sound, that really brings out your playing dynamics. Check it out on Amazon.

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