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OmnidirectionalCardioidBidirectionalADK Berlin 47-T

Multi-Pattern Condenser Microphone

The Berlin 47-T is a multipattern FET condenser with a large-diaphragm K47-type capsule and a transformer-coupled output. It was introduced in 2013 as part of ADK’s “T-Fet” series of “tripolar” multipattern mics.

ADK/3-Zigma GK47 capsuleThe 47 Au uses the GK47 capsule from ADK’s 3-Zigma product line; this is a clone of the Neumann K47 capsule, voiced to sound like current production K47 capsules.

The circuit is made with high-quality parts, including Wima capacitors, a premium JFET from Phillips/Norelco, and an Oxford/OEP output transformer.

Three switches located below the headbasket allow for multiple configuration options:

A 3-way switch on the front of the microphone allows selection of Cardioid, Omni, or Figure-8 polar patterns.

On the rear of the mic, the first of two 3-position switches allows selection of two high-pass filters: -6dB/octave at either 100Hz or 160Hz.

A second 3-way switch controls the input pad: 0dB, -8dB, or -16dB.

Permalink: ADK Berlin-47-T

The mic was released in 2013.


Pickup Patterns Pads & Filters
Omnidirectional (n/a mV/Pa; 20 - 20,000 Hz)
Cardioid (18.8 mV/Pa; 20 - 20,000 Hz)
Bidirectional (n/a mV/Pa; 20 - 20,000 Hz)
  • Pad: -8dB (Via Switch)
  • Pad: -16dB (Via Switch)
  • Filter: HPF: -6dB/octave @ 100Hz (Via Switch)
  • Filter: HPF: -6dB/octave @ 160Hz (Via Switch)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 27.3mm
Capsule diameter: 34mm
Diaphragm gauge: 6 microns
n/a Max SPL: 134 dB
Self-noise: 15.0 dB(A)
Weight Length Max Diameter Interface(s)
530g (18.70oz) 213mm (8.39'') 50mm (1.97'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power

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