Search Microphones

Share This Page

R-F-T AK47 Mk II Microphone Sets

9 polar patternsTelefunken Elektroakustik R-F-T AK47 Mk II

Multi-Pattern Tube Condenser Microphone

The R-F-T AK-47 Mk II is a revised version of Telefunken Elektroakustik’s AK47, a multipattern tube condenser.

The original AK47 was designed by AMI, and used AMI’s proprietary “BV47” transformer coupled with a Telefunken EF732 tube and a Chinese K67-style capsule. Both the original and the Mk II are 9-pattern microphones built into an AKG C12-style body.

R-F-T AK47 Mk IITelefunken Elektroakustik’s licensing agreement with AMI lapsed in 2009. The company revised the microphone by sourcing a new transformer modeled after the U47’s BV8. According to Telefunken, the transformer is manufactured in California.

Like the original AK47, the Mk II uses a NOS Telefunken EF-732 tube.

The Mk II capsule is described as model TK47, which appears to be a K67-style condenser capsule: dual backplate, dual diaphragm, center-terminated.

The circuit was redesigned to best utilize the new transformer:

Telefunken Elektroakustik

Through continued research, the AK-47 MkII’s new amplifier better employs the extended low frequency capabilities of the original 1950’s transformer design. Additional modifications have introduced premium quality components into the circuit layout in order to take full advantage of the extended frequency response capabilities.

Careful attention has been paid to current management utilizing wide, direct traces and large ground planes within the amplifier in order to increase low frequency articulation, and lower the noise floor of the tube amplifier for better overall detail.

Telefunken Elektroakustik AK47 Mk IIThe AK-47 Mk II ships with an elastic shockmount, 7-pin cable, power supply with pattern control, and a padded wooden box for the mic.

Permalink: Telefunken Elektroakustik AK47-MkII

The mic was released in 2010.


Pickup Patterns Pads & Filters
Omnidirectional (14 mV/Pa; 20 - 20,000 Hz)
Cardioid (14 mV/Pa; 20 - 20,000 Hz)
Bidirectional (14 mV/Pa; 20 - 20,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 25mm
Capsule diameter: 32mm
Diaphragm gauge: 6 microns
200 Ohms (Low) Max SPL: 132 dB
Self-noise: 16.0 dB(A)
Weight Length Max Diameter Interface(s)
765g (26.98oz) 241mm (9.49'') 45mm (1.77'')
  • 3-pin XLR male (1)
Power Specifications
  • Includes tube power supply

Did we get anything wrong on this page? Please let us know!