Detail 01
Dual 4-band EQ
EQ 1 and EQ 2 each provide bass, low-mid, and high-mid controls, while sharing one treble control.
Product detailSKU #1500000422888
AshdownGeezer Butler Pedal of Doom Bass EQ & Overdrive Pedal - Black
1/8
Independent shopping perspective
The Korena take
A performance-focused bass EQ and overdrive pedal with two switchable tonal profiles, a Doom drive circuit, level metering, and transformer-isolated DI output.
Strong match
Who this is for
- Bassists who need to switch between two fully shaped EQ sounds
- Players seeking adjustable grit through heavy saturation
- Stage or studio rigs that benefit from a transformer-isolated XLR DI
Consider the trade-offs
When to look elsewhere
- Players who only need a single EQ setting
- Users without a compatible 9–18V DC power supply
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
Dual VU meters
They monitor input and output levels.
Detail 03
Transformer-isolated DI
The XLR DI output is transformer isolated and includes a ground lift.
Detail 04
Footswitches
Separate switches select EQ 1/2 and engage Doom.
Final check
Know before you order
- 01A 9–18V DC power supply is required and sold separately.
- 02The pedal has one 1/4 in. input, one 1/4 in. output, and one transformer-isolated XLR DI output.
- 03Treble is shared between the two EQ sections.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I switch between two EQ sounds?
Yes. The pedal has two EQ sections and an EQ 1/2 footswitch.
02Does it include an overdrive circuit?
Yes. Its Doom drive circuit is footswitchable and has Doom and Doom volume controls.
03Does it have a DI output?
Yes. It has one transformer-isolated XLR DI output with ground lift.
04Is a power supply included?
No. It requires 9–18V DC power, sold separately.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
2 detailsPickups & controls
- Global controls
- Output, Doom, Doom volume, shared treble control
- Footswitches
- EQ 1/2, Doom
1 detailsBody & build
- Country of Origin
- United Kingdom Dimensions & Weight Dimensions (WxHxD): 7.2" (18.3 cm) x 2.56" (6.5 cm) x 4.72" (12 cm) Weight: 2.82 lb. (1.28 kg)
19 detailsOther
- Category Source
- detail
- Power requirement
- 9-18V DC (sold separately)
- VU meters
- 2 (input/output)
- DI
- 1 x XLR, transformer isolated
- Product type
- EQ and overdrive pedal
- Korena Special
- false
- EQ
- 2 x 4-band EQ
- Dimensions (WxHxD)
- 7.2" (18.3 cm) x 2.56" (6.5 cm) x 4.72" (12 cm)
- Weight
- 2.82 lb. (1.28 kg)
- Input
- 1 x 1/4"
- Country of origin
- United Kingdom
- Product Type
- EQ and overdrive pedal
- Tier
- new
- Output
- 1 x 1/4"
- Model
- Geezer Butler Pedal of Doom
- Ground lift
- Yes
- Source Id
- site51500000422888
- EQ 1
- Bass, Lo Mid, Hi Mid, Treble (shared with EQ 2)
- EQ 2
- Bass, Lo Mid, Hi Mid, Treble (shared with EQ 1)
Complete your setup
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