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9 polar patternsADK Z-251

Multi-Pattern Tube Condenser Microphone

The Z-251 is ADK’s modern take on the legendary Telefunken ElaM 251. It uses a dual-triode tube (12AT7, 12AU7, etc), a 34mm edge-terminated capsule with a 3-micron diaphragm, and a Jensen output transformer.

The capsule was designed to evoke the sound of the original 251, including its “airy” top end.

Like all of the ADK “Z-mods” tube microphones, the Z-251 provides a 9-position polar pattern switch on the power supply.

Chuck Ainlay

I can’t tell the difference between ADK Custom Z-251 and a vintage 251.

The Z-251 is finished in a pale yellow, reminiscent of its famous predecessor. In the ADK “Tone Color” continuum, they refer to the color as “Top Banana to indicate its almost golden sheen”.

A variety of tubes is included with the Z-251, allowing users to further refine the sound, distortion characteristics and vibe for the project at hand.

The Z-251 includes a tweed flight case, hardwood mic box, suspension mount, ring mount, power supply, Accusound cables (3-pin and 7-pin), and a set of spare tubes to allow for sonic experimentation.

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Specifications

Pickup Patterns Pads & Filters
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 28mm
Capsule diameter: 34mm
Diaphragm gauge: 3 microns
n/a
Weight Length Max Diameter Interface(s)
n/a n/a n/a
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

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