
The EarthQuaker Devices ZEQD-Pre is a collaborative tube preamplifier that successfully translates the elusive feel and response of a boutique Dr. Z amplifier into a pedalboard-friendly unit. More than a simple overdrive, it’s a complete, all-analog amplifier system designed for flexible modern use.
At its core is a genuine EF86 pentode tube, chosen for its high gain factor, wide bandwidth, and dynamic sensitivity. This translates to a touch-responsive, full-frequency clean tone that serves as an exceptional pedal platform. The passive three-band EQ is notably interactive and musical, behaving like a classic amp tone stack.
Its true innovation lies in its professional routing and output options. The unit functions simultaneously as:
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A preamp/boost pedal into your existing guitar amp.
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A direct recording interface via its balanced XLR output, with a switchable analog cab sim.
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A headphone practice amp with dedicated level control and always-available cab simulation, even when the pedal is bypassed.
Key Features:
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EF86 Tube Preamplifier: Delivering hi-fi clarity, dynamic range, and authentic tube warmth.
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Professional Direct Output: Balanced XLR with Ground Lift and Cab Sim Bypass switches.
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Headphone Output: Features built-in analog cabinet simulation, usable even in bypass.
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Flexible Routing: All outputs (1/4”, XLR, headphone) are active simultaneously.
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Dual-Function Footswitches: One for bypass, one for a clean, full-range Boost that defeats the tone stack.
The ZEQD-Pre excels as a do-everything hub. It’s ideal for players seeking a premium direct recording tone, a silent practice solution with authentic feel, or simply a supremely responsive tube preamp to anchor a pedalboard. Its collaborative design delivers on its promise: the refined sound of a Dr. Z amp in an incredibly versatile EQD pedal format.










