Detail 01
EF86 pentode tube
The preamp section uses an EF86 tube rather than digital modeling.
Product detailSKU #1500000474691
EarthQuaker DevicesZEQD-Pre Tube Preamp Pedal - Black and White
bluespopprogressive metaldjent
1/7
Independent shopping perspective
The Korena take
Put the ZEQD-Pre at the end of a pedalboard when you want tube-based preamp control before a direct output. Its EF86 circuit, passive Bass, Middle and Treble controls, and analog cabinet simulation create a self-contained analog path for recording, silent practice, or a backline-free stage setup. Activate and Boost footswitches make it easy to move between your shaped sound and a full-range EQ-bypassed push. The balanced XLR output, ground lift, headphone jack, and cab-bypass option support direct and hybrid rigs.
Strong match
Who this is for
- End-of-board direct rigs needing tube preamp shaping and analog cabinet simulation.
- Silent-practice or recording setups using the dedicated 1/4-inch headphone output.
- Hybrid setups that pair the pedal with an external IR loader or modeling environment.
Consider the trade-offs
When to look elsewhere
- Rigs without a separately purchased 9V DC supply capable of providing at least 500mA.
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
Passive 3-band EQ
Bass, Middle, and Treble controls shape the core preamp voice.
Detail 03
Boost footswitch
Engaging Boost bypasses the EQ for a full-range level boost controlled by its own knob.
Detail 04
Balanced XLR direct output with ground lift
Provides a balanced direct connection with a ground-lift control.
Detail 05
Cab Bypass
Turns off the onboard analog cabinet simulation for external IR or modeling workflows.
Final check
Know before you order
- 01Provide a separately sold 9V DC power supply rated for at least 500mA.
- 02Use Cab Bypass when routing to an external IR loader or modeling environment.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can it connect directly to a mixer or recording setup?
Yes. It has a balanced XLR direct output with ground lift and an onboard analog cabinet simulation.
02Can I use headphones?
Yes. A dedicated 1/4-inch headphone output is provided.
03What happens when I engage Boost?
Boost bypasses the passive EQ and delivers a full-range boost, with its level set by the Boost control.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- EQ
- Passive 3-band EQ
2 detailsPickups & controls
- Footswitches
- Boost, Activate
- Control Knobs
- Boost, Level, Bass, Middle, Treble
1 detailsBody & build
- Color
- Black and White
3 detailsConnections & power
- Outputs
- 1 x 1/4 inch, balanced XLR direct out
- Inputs
- 1 x 1/4 inch
- Power Supply
- 9V DC (sold separately)
2 detailsSize & weight
- Weight
- 1.26
- Dimensions
- 3.94 inch x 5.88 inch x 2.75 inch
8 detailsOther
- Analog Digital
- Analog
- Headphones
- 1 x 1/4 inch
- Current Draw
- 500mA minimum
- Ground Lift
- Yes
- Bypass
- True bypass
- Cab Bypass
- Yes
- Product Type
- Tube preamp pedal
- Tubes
- EF86 pentode
