The Ashdown Geezer Butler Signature is an Ashdown distortion pedal, currently around $238.39. Close alternatives include the Ashdown MAS GZR-Pod and the Ashdown John Myung Double Drive. It pairs well with the Laney RB3 Richter Bass Amp and the Ampeg Rocket Bass RB-115 Combo Bass Amp.
Ashdown Geezer Butler Signature
Ashdown · pedal
The Ashdown Geezer Butler Pedal of Doom is a dual-channel bass distortion and preamp pedal designed in collaboration with Black Sabbath bassist Geezer Butler over 18 months. It features two independently switchable EQ stages, a 5-band active EQ, transformer-isolated DI output, and runs at 9V or 18V for adjustable headroom. The Clean channel delivers warm, vintage tube-amp-like character at low gain, while the Doom channel pushes into aggressive saturation and fuzz-laden territory. It suits doom metal, stoner rock, and classic heavy rock bass tones. Build quality is fortress-like with a 1.6mm steel enclosure. Best used as a bass preamp or DI unit as well as a tone-shaping drive, particularly for players wanting warm vintage saturation without sacrificing low-end presence.
- bass
- preamp
- di
- doom
- high gain
- low gain
- drive
- eq
Good for
- Silent Recording
- Silent Stage
Price updated Aug 27, 2026
Genres the Ashdown Geezer Butler Signature is commonly used in
- Stoner Rock
- Doom Metal
- Alternative
cited
Inferred from shared tonal signals, not a stated genre tag. - Metal
cited
Inferred from shared tonal signals, not a stated genre tag. - Rock
cited
Inferred from shared tonal signals, not a stated genre tag. - Blues
cited
Inferred from shared tonal signals, not a stated genre tag.
Amps that pair well with the Ashdown Geezer Butler Signature
Laney RB3 Richter Bass Amp
Laney
36% matchThe Geezer Butler's doom-voiced bass distortion pushes the Richter's rehearsal-oriented EQ into heavier territory.
Ampeg Rocket Bass RB-115 Combo Bass Amp
Ampeg
35% matchInto the Rocket Bass's warm vintage preamp, the Geezer Butler's doom-voiced drive has a broad low end to push against instead of thinning out.
Phil Jones Bass Compact Plus BG-450
Phil Jones
35% matchThe BG-450's clear, articulate headroom gives the Geezer Butler's doom-voiced bass distortion a defined amp platform.
Traynor SB112
Traynor
35% matchThe Traynor SB112's gigging-ready bass EQ gives the Geezer Butler's doom-voiced distortion a straightforward platform.
Traynor YBA100 Tube Bass Head
Traynor
33% matchInto the YBA100's dynamic, headroom-rich tube preamp, the Geezer Butler's doom-voiced distortion has a genuinely huge amp voice to push into.
Omega Darkglass AO900 Alpha 900 Bass Head
Omega
32% matchPush the Geezer Butler's doom-voiced preamp drive into the Alpha 900's high headroom and the saturation stays harmonically rich instead of choking out.
Gallien-Krueger Fusion 500 S
Gallien Krueger
31% matchThe Fusion 500's organic, hybrid tube preamp gives the Geezer Butler's doom-voiced distortion a warmer amp voice to push into.
Fuchs FBS-700
Fuchs
31% matchThe FBS-700's touring-grade headroom gives the Geezer Butler's doom-voiced distortion serious power to push against.
See all 72 amps that pair with the Ashdown Geezer Butler Signature →
Pedals that stack with the Ashdown Geezer Butler Signature
Caroline Guitar Company Kilobyte
Caroline Guitar Company
33% matchThe Geezer Butler's doom-heavy bass distortion adds real low-end grit that the Kilobyte's own delay character doesn't have on its own. — goes in the amp's FX loop (or last, into a clean amp)
Vemuram Shanks
Vemuram
29% matchThe Shanks' warm, natural overdrive stacks cleanly ahead of the Geezer Butler's doom-voiced drive for a fuller gain layer.
Soldano SLO
Soldano
25% matchPush the SLO's tight, articulate preamp gain with the Geezer Butler's own doom-voiced distortion for two very different flavors of heavy.
Mooer woodverb
Mooer
25% matchAshdown Geezer Butler Signature's bright balances out the warm tone — goes in the amp's FX loop (or last, into a clean amp)
Xotic Bass BB Preamp V1.5
Xotic
25% matchThe transparent tone has headroom to spare — Ashdown Geezer Butler Signature gives it low gain to fill it with
Origin Effects Cali76 Compact
Origin Effects
25% matchWhere this leans warm, Ashdown Geezer Butler Signature answers back bright
ZVEX Fuzz Factory
Zvex
24% matchStack the Fuzz Factory into the Geezer Butler's doom-voiced drive for a glitchier, more unstable layer on top of the low-end grit.
HomeBrew Electronics CPR Compressor Retro
Homebrew
24% matchInto a transparent tone, Ashdown Geezer Butler Signature brings the low gain it's missing
See all 85 pedals that pair with the Ashdown Geezer Butler Signature →
Cheaper alternatives
Ampeg Classic Analog Bass Preamp pedal
Ampeg
69% similarityShared character: treble, pedal, middle
Electro-Harmonix Nano Operation Overlord
Electro-Harmonix
69% similarityShared character: hard_rock, treble, middle
Dunlop MXR M85 Bass Distortion
Dunlop
69% similarityShared character: high_gain_settings, presence, pedal
Electro-Harmonix Battalion Bass Preamp/DI
Electro-Harmonix
94% similaritysimilar tone character
Fender Trapper
Fender
94% similaritysimilar tone character
Boutique & premium upgrades
Similar charactersee all similar tone character →
Ashdown MAS GZR-Pod
Ashdown
75% similarity“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.”
Ashdown John Myung Double Drive
Ashdown
71% similarityShared character: players, internal_transformer, pedal
Behringer BDI21
Behringer
69% similarityShared character: presence, treble, preamp
Ampeg F17-1
Ampeg
69% similarityShared character: treble, pedal, middle
Death By Audio Basswar
Death By Audio
94% similaritysimilar tone character
Ashdown James LoMenzo Mega Drive
Ashdown
94% similaritysimilar tone character
See all alternatives to the Ashdown Geezer Butler Signature (cheaper + boutique) →
Questions people ask
What are good alternatives to the Ashdown Geezer Butler Signature?+
The closest matches in character are the Ashdown MAS GZR-Pod, the Ashdown John Myung Double Drive, the Behringer BDI21. Budget picks: Ampeg Classic Analog Bass Preamp pedal, Electro-Harmonix Nano Operation Overlord, Dunlop MXR M85 Bass Distortion. Boutique upgrades: Orange Bass Butler Bi-Amp Bass Preamp.
What pairs well with the Ashdown Geezer Butler Signature?+
Strong matches from rig and tone-complementarity evidence: Laney RB3 Richter Bass Amp, Ampeg Rocket Bass RB-115 Combo Bass Amp, Phil Jones Bass Compact Plus BG-450 — The Geezer Butler's doom-voiced bass distortion pushes the Richter's rehearsal-oriented EQ into heavier territory..
How much does the Ashdown Geezer Butler Signature cost?+
Around $238.39 (live listing price, updated Aug 27, 2026).