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Why Choose El Cajon Guitars & Music?
Personally Inspected- Every guitar checked by owner/ experienced musician
Extended Warranty- Surebright protection available
Flexible Payments- Progressive Leasing options
Expert Service- Personal attention, not corporate processing
- Price
- $369
Pickup available at 1935 Friendship Drive
Usually ready in 24 hours
Geezer Butler "Pedal of Doom" — Bass Distortion & Preamp with Dual EQ and DI
- Geezer Butler-inspired bass distortion & preamp
- Dual EQ voices + transformer-isolated DI
- Limited stock — in hand and ready to ship
High demand, short supply — we have 2 in stock.
Capture the heavy, harmonically rich bass tone made famous by Geezer Butler. The Ashdown Pedal of Doom is a bass distortion/preamp built around an active multi-band EQ and transformer-isolated balanced DI, so you can go from subtle grit to crushing doom while keeping your signal tight and consistent on stage or in the studio.
Why players love it
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Iconic tones on tap: From classic Sabbath grind to modern doom/stoner textures.
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Two switchable EQs: Sculpt two distinct voices (clean/drive or two gain flavors) and switch between them instantly.
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Active EQ control: Bass, Low-Mid, High-Mid, plus shared Treble for precise cut/boost and mix-ready clarity.
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Pro I/O: Transformer-isolated DI to FOH/interface with stable level and minimal noise.
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Dual VU meters: Visual level monitoring to avoid gain jumps and keep your output consistent.
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Road-worthy: Ashdown design/engineering from Essex with rugged construction.
What you can do with it
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Pre-shape your drive with pre-EQ for tighter low end and focused mids.
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Set two scenes (e.g., "groove" vs. "doom") and flip between them live.
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Record direct using the onboard DI for thick, mix-ready bass tracks.
Controls & I/O
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EQ (per side): Bass • Low-Mid • High-Mid • (shared) Treble
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Switching: Two independent, switchable EQ channels
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Meters: Dual VU
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Outputs: 1/4\" out • Balanced DI (transformer-isolated)
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Power: 9–18V DC, center-negative (external supply)
In the box
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Pedal of Doom unit
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Quick start card (manufacturer)
Availability & fulfillment
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In stock now (limited qty).
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Local pickup available at El Cajon Guitars & Music (select at checkout).
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Shipping: Continental U.S. available at checkout. Questions? Email us: info@ecgmusic.com.
FAQ
Is this the "Geezer Butler" pedal?
Yes—this model was developed with his tone in mind and approved by the legend himself.
Can I run straight to the mixer or interface?
Yes. Use the balanced DI to go direct to FOH or your recording interface.
Will it work with 9V power?
Yes. It accepts 9–18V DC, center-negative (power supply not included)
Shipping Information
Our on-line store is open 24/7 and we ship Monday through Friday, excluding some holidays. Orders received for products without shipping restrictions on its product page will ship the same business day when received before 12:00 p.m. PST. Orders in high demand will have an estimated production time listed on its product page and will ship according to the date listed.