EarthQuaker Devices ZEQD-Pre Tube Preamp Pedal

zZounds Gear Experts Say...
Add tube warmth and direct recording convenience! EarthQuaker’s ZEQD-Pre uses an EF86 tube, passive 3-band EQ, analog cab sim, and balanced XLR output.

The ZEQD-Pre is an all-analog tube preamplifier that brings together EarthQuaker Devices' innovative pedal design and Dr. Z Amplification's decades of tube amp expertise. With a passive Three-Band EQ, professional headphone output, balanced XLR output, and onboard analog cabinet simulation, the ZEQD-Pre delivers authentic tube warmth and dynamic response in a complete analog amplifier system that fits right on your pedalboard.

Designed to live at the end of your signal chain, the ZEQD-Pre adds classic tube character to everything upstream. Its passive Three-Band EQ provides precise tonal control--fine-tune your amp's voice, push its preamp into rich harmonic overdrive, or breathe dimension and life into a modeling setup.

What happens when you combine the EarthQuaker Devices ZEQD and the Gamechanger Audio Light Pedal? A Perfect Pairing, that’s what!


This pedal is a simple, modern tool devised to give you all the organic sonic character and dynamic response of a tube amp in a compact and convenient form factor. There are no menus to dive through. No IR loading. No firmware updates. No 0s, 1s, or any other pesky digital artifacts to get in the way of you and your tone. The ZEQD-Pre is the no-fuss analog solution to all your digital woes.

The ZEQD-Pre features a built-in analog cabinet simulation for realistic amp feel during quiet practice sessions to give you the full EF86 tube character without disturbing your housemates. This feature is handily disengaged via the Cab Bypass read more switch enabling you to send a pure signal to your preferred IR loader or modeling software and making it perfect for direct recording, backline-free gigs, or hybrid rigs with multiple signal paths.

Hit the Boost footswitch and the Three-Band EQ drops out completely, delivering a full-range boost with its own dedicated level control. Two distinct tones at your feet: sculpted EQ tone or wide-open boosted voice. Simple, immediate, and musical.

The ZEQD-Pre uses the EF86 pentode--the same tube that gives many Dr. Z amplifiers their pristine hi-fi tone and makes them such responsive pedal platforms. What does that mean for you? It means dynamic and nuanced touch sensitivity, hi-fi full frequency clarity, and an EQ that is both predictable and highly responsive.

Though designed with guitarists in mind, the ZEQD-Pre's broad range of EQ voices and tube warmth can enrich the sonic color and harmonic content of just about anything you can think of plugging into it, including, but not limited to, bass, synths, keys, drums, vocals, and microphones.

Each ZEQD-Pre is built by one sophisticated droid and many kind-hearted flesh and blood artisans in the tropical metropolis of Akron, Ohio USA.

Features:

- Authentic tube warmth and dynamic response from the EF86 pentode.
- Built-in analog cabinet simulation for realistic amp feel.
- Activate Foot Switch activates or bypasses the ZEQD-Pre.
- Boost Foot Switch defeats the tone controls and delivers a full range boost without altering the frequency response. (only active when the Activate switch is on.)
- Bass control adjusts frequencies from 20Hz-400Hz.
- Middle control adjusts frequencies from 400Hz-2KHz.
- Treble control adjusts Frequencies from 2KHz-20KHz.
- Level controls output volume when the tone controls are active.
- Boost controls output volume when the Boost is active and the tone controls are bypassed.
- Ground Lift
- Cab Bypass to remove the analog cabinet simulation on the XLR out.
- Professional Headphone Out
- Balanced XLR Direct Out
- Lifetime Warranty
WARNING: Cancer and Reproductive Harm - www.p65Warnings.ca.gov.
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- Boxed Dimensions: 6.5" x 5.25" x 3.125" / 16.51 cm x 13.335 cm x 7.9375 cm
- Out of Box Dimensions: 5.875" x 3.9375" x 2.75" / 14.9225 cm x 10.00125 cm x 6.985 cm
- Boxed Weight: 1.535 lbs. / 0.69626429 kg.
- Out of Box Weight: 1.255 lbs. / 0.56925842 kg.
- Switching: ZEQD-Pre uses mechanical true bypass switching.
- Input Impedance: 10 MO
- Output Impedance: Variable
- Headphone Out Impedance: 39O
- Direct Out Impedance: 100O
- Current Draw: 500mA

Dimensions and Weight in Packaging

Base Item

  • Shipping Weight: 1.52 lbs
  • Shipping Dimensions: 7 x 5 x 3 in
  • Manufacturer Part Number (MPN): EQDZEQDV1USA

Open Box (Very Good)

  • Shipping Weight: 1.52 lbs
  • Shipping Dimensions: 7 x 5 x 3 in
  • Manufacturer Part Number (MPN): EQDZEQDV1USA

Open Box (Like New)

  • Shipping Weight: 1.52 lbs
  • Shipping Dimensions: 7 x 5 x 3 in
  • Manufacturer Part Number (MPN): EQDZEQDV1USA

EarthQuaker Devices ZEQD-Pre Tube Preamp Pedal
Updated March 17, 2026 15:16 by Justin LaForte
Hey everybody, this is Justin at zZounds and these are some things to know about the EarthQuaker Devices ZEQD-Pre preamp pedal. This is an all-analog preamp pedal. A cool thing to know about it is that it has an EF86 preamp tube in there, so this is an all-analog signal path. Some other fun features about it are that it has a boost, and the boost is only able to be used in conjunction with the main circuit. But once you put the boost on, it actually bypasses all of the EQ. So this is a raw signal that’s not affected by the tone controls, which means you get a really loud, brash signal. A good thing to know is to roll the level control down when you’re using the boost because it can get really loud with this.

Another cool thing is that it has a headphone out so you can use that for silent practicing. Another thing is it has a direct out with a cabinet simulation on it, but you also have a cab bypass switch so you can bypass the cabinet simulation if you want a more raw pedal sound. And those are a few things to know about the EarthQuaker Devices ZEQD-Pre preamp pedal.
EarthQuaker Devices ZEQD-Pre Tube Preamp Pedal

For support or warranty questions, please contact the manufacturer:
Phone: 330-252-9220
Email: info@earthquakerdevices.com
Web: https://www.earthquakerdevices.com

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