Mad Professor Stone Grey Distortion vs REVV G4 Distortion

The Mad Professor Stone Grey Distortion and the REVV G4 Distortion are both pedals sharing high gain, transparent. The Mad Professor Stone Grey Distortion leans bright and tight. The REVV G4 Distortion leans saturated and aggressive.

Similarity
citedBlended from circuit-archetype lineage, dynamic feel, tone-signal overlap and tone-vector distance — the tone vector itself is derived from editorial description text, not a measured acoustic signal, so this reflects how similarly the catalog copy describes the two, not a lab measurement. Shown only within a gear class, and only where there's enough evidence to be meaningful.

49% — somewhat different

Shared genres
citedGenres both listings are associated with.
  • Metal
Shared tone character
citedDerived from overlapping tonal signals across both listings.
  • high gain
  • transparent
Citation fame
citedCitation/mention fame — how often this gear is cited across artist rigs and gear discussion.
0%
17%
Price

$119.99via Reverb

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Description

The Mad Professor Stone Grey Distortion is a high-gain distortion pedal with Volume, Distortion, and Tone controls, the Tone acting as a boost/cut shelving EQ similar to a bright switch. It is built to retain note clarity and a tight low end even at extreme gain, staying usable on extended-range guitars such as seven, eight, and nine strings without turning to mud. Lower Distortion settings behave more like an overdrive, while higher settings deliver a fierce, high-gain attack, making it a distortion pedal that can also function as an overdrive rather than only excelling at one end of the gain range. It is designed to add drive on top of an amp's own voicing rather than overriding it.

The Revv G4 is a pedal version of the Red channel distortion from Revv Amplification's acclaimed amplifiers, delivering extreme high-gain distortion with the clarity and dynamics characteristic of Revv's tube amplifier circuits. The G4 Red channel represents Revv's most aggressive amp voicing.

Genres
citedGenres this gear is documented as being used in.
  • Hard Rock
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Tonal lean
  • bright
  • tight
  • saturated
  • aggressive
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Mad Professor Stone Grey Distortion vs REVV G4 Distortion — Shared Character & Differences — NodeTone