EarthQuaker Devices ZEQD-Pre Tube Preamp

Unlock the rich, harmonic complexity of a genuine tube amplifier right on your pedalboard with the ZEQD-Pre. Born from a collaboration between EarthQuaker Devices and the legendary Dr. Z Amplification, this all-analog preamp is built around a NOS EF86 vacuum tube, celebrated for its dynamic touch response and thick, organic character. Unlike digital modelers or IR-based units, the ZEQD-Pre delivers the immediate feel and three-dimensional depth that only high-voltage glass can provide. Whether used to warm up a sterile solid-state rig, add authentic tube feel to a modeling setup, or serve as the ultimate front-end for your recording interface, this pedal breathes life into your signal.

Designed to be the final link in your chain, the ZEQD-Pre features a powerful passive three-band EQ that allows for smooth, musical sculpting of your lows, mids, and highs. For moments when you need to cut through the mix, the footswitchable Boost drops the EQ section entirely, engaging a full-range, unfiltered tube boost with its own dedicated level control—perfect for searing leads or pushing an amp into natural overdrive. With its versatile connectivity, including a balanced XLR direct out and a headphone jack with analog cabinet simulation, the ZEQD-Pre is an indispensable tool for both stage and studio, handling everything from guitar and bass to synths and vocals with ease.

Highlights

• Authentic all-analog tube preamp circuit designed in collaboration with Dr. Z Amplification

• Features a NOS EF86 pentode tube for superior dynamics and harmonic richness

• Passive 3-band EQ for precise tonal shaping, plus a footswitchable full-range Boost

• Integrated analog cabinet simulation for realistic direct recording and headphone practice

• Versatile I/O options including balanced XLR out with ground lift and Cab Bypass switch

Specifications

• Pedal Type: Tube Preamp

• Tube Type: EF86 Pentode

• Inputs: 1 x 1/4" Instrument

• Outputs: 1 x 1/4" Main, 1 x XLR Balanced Direct Out, 1 x 1/4" Headphone

• EQ: 3-band Passive (Bass, Middle, Treble)

• Controls: Level, Boost, Bass, Middle, Treble, Cab Bypass Switch, Ground Lift

• Switching: True Bypass

• Power Source: 9V DC power supply (sold separately)

• Origin: Handmade in Akron, Ohio, USA

Please feel free to reach out to our knowledgeable sales staff with any additional questions!