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The Impedance Reference Module is a point-to-point wired analog interface designed to give musicians complete control over the relationship between their instrument and the first stage of their signal chain.

Every pickup interacts differently with an input circuit. The correct input impedance can preserve clarity, enhance harmonic detail, and allow the natural character of the instrument to come through without unwanted loading or loss of high-frequency response.

Featuring a selectable input impedance network, the Impedance Reference Module™ allows you to match the circuit response to your instrument:

Selectable Impedance Architecture

  • 500kΩ: Tighter, controlled response tailored for humbuckers and active systems.
  • 1MΩ: The classic high-impedance standard for maximum openness and dynamic feel.
  • 3MΩ / 5MΩ: Ultra-high transparency for vintage single coils, low-output pickups, and piezos.

Built using point-to-point wiring, the Impedance Reference Module™ preserves signal integrity while delivering the character of handcrafted analog equipment.

From vintage single-coil sparkle to powerful humbucker definition and natural piezo response, it gives you precise control over your instrument’s voice before it enters your signal chain.

Handcrafted analog engineering. Point-to-point construction. Engineered for clarity, built for tone.


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ConditionBrand New (New)
Brand New items are sold by an authorized dealer or original builder and include all original packaging.Learn more
Brand
Model
  • Fuzz
Finish
  • Matte Black
Categories
Year
  • 1970s
Made In
  • Austria

Product safety information may be available here.

Doheny Audio

Anif, Austria
Joined Reverb:2025

Reverb Gives

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