Keeley Muse Driver vs Tone City TC-T37 Mad Stone Classic Germanium Diode
The Keeley Muse Driver and the Tone City TC-T37 Mad Stone Classic Germanium Diode are both pedals sharing bright. The Tone City TC-T37 Mad Stone Classic Germanium Diode leans aggressive and tight. Current prices: $199 vs $79.80.
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Blended 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.37% — somewhat different
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Derived from overlapping tonal signals across both listings.- bright
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$199via Reverb
$79.80via Reverb
The Keeley Muse Driver, the follow-up to the Super AT Mod, is a 4-in-1 overdrive built with Andy Timmons, combining JFET transistors, germanium diodes, and op-amp gain stages for harmonically rich overdrive. Controls include Tone, Drive, and Level, with two independent toggle switches offering AT (Low-Cut) or RK (Low Boost/Phat) Tone Mods and AT (Asymmetrical LED + Silicon) or RK (Dual Germanium) Drive Clipping Mods, giving four genuinely distinct playable voicings depending on toggle combination.
The Tone City Mad Stone is a budget distortion pedal built around germanium diode clipping. Germanium diodes clip at a lower threshold than silicon, so the voicing is softer, warmer and more compressed than a typical silicon distortion, with a rounded top end and a smooth, vintage-flavoured breakup rather than a sharp, cutting edge. It sits in a compact mini enclosure at an accessible price and is aimed at players wanting classic, warm distortion character without a boutique outlay.
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Genres this gear is documented as being used in.- Electronic
- alternative
- hard rock
- metal
- aggressive
- tight
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Occasions this gear suits — judged per model, or derived from its wattage, connectivity and category.- Busking
- Live