Ashdown MAS GZR-Pod vs Demon FX Microtubes A7K Bass Preamp
The Ashdown MAS GZR-Pod and the Demon FX Microtubes A7K Bass Preamp are both pedals sharing aggressive. The Ashdown MAS GZR-Pod leans low gain and transparent. Current prices: $250.61 vs $67.88.
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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.33% — somewhat different
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Derived from overlapping tonal signals across both listings.- aggressive
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Citation/mention fame — how often this gear is cited across artist rigs and gear discussion.$250.61via Reverb
$67.88via Reverb
The Ashdown MAS GZR-POD is a variant of the Geezer Butler Pedal of Doom, a professional-grade bass preamp and distortion pedal built with Black Sabbath bassist Geezer Butler. It features dual independently switchable EQ stages, an active 5-band EQ on each channel, transformer-isolated DI output, dual VU meters, and 9V or 18V operation for adjustable headroom. The Clean channel delivers warm vintage tube-amp character at low gain while the Doom channel pushes into aggressive saturation and fuzz territory. Suited for doom metal, stoner rock, and classic heavy rock bass tones with strong DI capabilities for direct recording or live PA routing.
The Demon FX MICROTUBES A7K is a budget bass preamp and overdrive pedal from the Chinese effects manufacturer Demon FX, inspired by the Darkglass Microtubes bass preamp circuit architecture. Delivers aggressive transistor-clipped bass overdrive with bass-specific EQ shaping including parametric midrange control. Suited for metal, djent, and modern aggressive bass tones.
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Genres this gear is documented as being used in.- Doom Metal
- Stoner Rock
- Metal
- Rock
- Djent
- low gain
- transparent
- saturated
- bright
- full
- fuzzy
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Occasions this gear suits — judged per model, or derived from its wattage, connectivity and category.- Silent Recording
- Silent Stage
- Live
- Silent Recording
- Studio