Mad Professor Evolution Orange Underdrive

Mad Professor Evolution Orange Underdrive

Marsoni

M251S

$165.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Mad Professor Evolution Orange UnderdriveThe Evolution Orange Underdrive (EOU) is an innovative pedal that enhances tone by providing cleaner sounds from overdriven tones, acting as an anti pedal. Ideal for vintage single channel amps, it allows players to maintain clarity and sparkle while keeping the amp in its sweet spot. The pedal features four pots to tailor the clean tone by adjusting the midrange, volume, bass, and treble. EOU is recommended for those seeking a unique tonal approach,

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I had high hopes for this, but sadly, it fell short. I have to wear a CPAP mask at night & the dry mouth is just one of the things I hate about it. I saw this, read the reviews & decided to give it a try. I used it per the directions, but it really did nothing to alleviate the dry mouth. I'm giving it 2 stars because it doesn't taste bad, but that's the only good thing I can say about this.

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Reviewed in the United States on February 9, 2026