Mad Professor Evolution Orange Underdrive PCB Pedal

£139.99

Also available on — Andertons, Gear4music, Reverb, Amazon, eBay

Fresh on the menu for 2026 are the Mad Professor Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Mad Professor Guitar Pedals today.


Description

Fresh on the menu for 2026 are the Mad Professor Guitar Pedals, freshly added and carefully selected. These New units are available to order online with fast, secure delivery from trusted UK retailers. Read on for full details, specifications, demos, videos, reviews, and the best places to buy the Mad Professor Guitar Pedals today.

Mad professors Evolution Orange Underdrive is a relaly intriguing pedal. Instead of pushing your tone like a traditional overdrive, the EOU works by lowering the midrange as that is where the overdrive mostly is. You can dampen the amplifier input with the EOU’s Volume control and then set the Bass and Treble to tailor your clean tone. EOU can also be used to boost mids by settings the Midrange and Volume up

Here’s what Mad Professor have to say about this pedal

Evolution Orange Underdrive (EOU) offers a new way to approach your tone. Instead of overdriving your clean tone, now you can get cleaner tones from your favourite overdriven tone.
That is what we call underdriving.

Evolution Orange Underdrive works really well with vintage single channel amps that sound great when you push them to overdrive.

Additional information

Weight 0.5 kg

Brand

Mad Professor

Mad Professor crafts boutique pedals with a strong focus on feel, clarity, and musical response. Known for touch-sensitive overdrives, warm modulation, and expressive dynamics, the brand blends vintage-inspired tone with refined modern design. Each circuit is built to enhance your core sound rather than overpower it.

Choose Mad Professor when you want character without compromise. From transparent drive to smooth, organic modulation, their pedals respond beautifully to your playing and sit naturally in the mix — subtle when needed, rich and full when pushed.

Category

Guitar Pedals

Tags

Boost

A boost pedal does one simple thing brilliantly — it makes your signal louder, stronger, and more alive. Whether you’re pushing a valve amp into natural breakup, lifting a solo above the band, or adding a touch more presence to your core tone, a clean boost gives you extra headroom without changing your character.

Use it at the front of your chain to drive other pedals harder, or after your gain stages to raise volume without adding distortion. Subtle or powerful, transparent or slightly coloured, a boost is one of the most useful tools on any pedalboard — small box, big difference.

New

This is brand new, fresh in, and a UK warranty is included. New Gear always comes from trusted UK music retailers.

Overdrive

Like a golden layer of melted cheese — warm, gooey, and just put it all over. It adds just the right amount of richness and grit, turning a clean signal into something smooth and savoury. Designed to mimic the natural breakup of a tube amp pushed to its sweet spot, overdrive delivers the flavour of classic rock and blues in every bite. From creamy mid-gain warmth to crisp edge-of-breakup sparkle, it’s the comfort food of guitar tone — simple, satisfying, and endlessly versatile. Whether it’s a mild crunch or a full-bodied roar, overdrive is where good taste begins.

used

Used pedals bring character, value, and often a bit of history to your board. Whether it’s a well-loved classic or a recent release looking for its next home, a used pedal offers the same core tone at a more accessible price. Fully tested and described clearly, it’s a chance to grab great gear without paying brand-new money.

Go used to explore different sounds, track down discontinued favourites, or build your setup more affordably. Sometimes a pedal with a few marks on the casing still delivers flawless tone — and might even have a story or two behind it.

Volume

Volume pedals control the output level of a guitar signal using a foot-operated treadle. They allow smooth volume swells, dynamic control during playing, and easy muting between songs. Volume pedals can be placed at different points in the signal chain to either control overall loudness or adjust gain and drive behaviour when positioned before distortion or overdrive pedals.