Telefunken AK-47 MkII Condenser Microphone

Condenser Pressure Gradient Microphone

The amplifier found in the Telefunken Elektroakustik / R-F-T AK-47 MkII features a new proprietary circuit designed around a premium NOS (New Old Stock) EF732 pentode vacuum tube. Sonically, the AK-47 MkII is a remarkably hi-fidelity microphone with a "present" but not "harsh" character, which in many ways is reminiscent of a cross between the historic M49 and U47/48 microphones of yesteryear. The result is a microphone with superior high frequency detail, a rich and powerful low end, and a delicate and intimate "air" that is usually found only in microphones several times the price.

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The R-F-T AK-47 MkII is a remarkably hi-fidelity microphone that is reminiscent of a cross between thehistoric M49 and U47 / U48 microphones. The result is a microphone with superior high frequency detailand a rich, full low-end response.

Telefunken Elektroakustik is well known for the historic recreation microphones found in the Diamond Series, which are meticulously made to historic detail with no expense spared. As such, these microphones become rather expensive for the average small studio or home enthusiast. With this in mind, the R-F-T Series of microphones was created.

The R-F-T Series of tube condenser microphones utilizes American designed electronics in conjunction with New Old Stock (NOS) vacuum tubes and standardized parts from overseas manufacturers. Just like the Diamond Series, all R-F-T Series microphones are hand-built in Telefunken Elektroakustik’s South Windsor, Connecticut facility. With this line, Telefunken Elektroakustik is able to provide a lower cost alternative to more expensive microphone systems, without sacrificing the qualities that would be expected from a Telefunken Elektroakustik microphone.

The amplifier found in the AK-47 MkII features a new proprietary circuit designed around a NOS EF-732 / 5840W vacuum tube, and a custom output transformer that is an exact replica of the historic BV8 transformer found in new Telefunken Elektroakustik and vintage U47andU48microphones. The dual sided large diaphragm TK67D capsule undergoes rigorous testing in our laboratory prior to installation in the AK-47 MkII, and again during final testing and burn-in of the microphone.

The EF-732 / 5840W tube is very similar to the legendary AC-701 tube in that is provides a velvety character to the overall tone of the microphone. The layout of the circuit board features broader traces for superior current on demand capability, which enhances the low frequency and transient response capability of the amplifier. Additionally, this layout helps minimizes noise and cross talk between components. When this tube and circuit is coupled with the historically accurate recreation of the BV8 transformer, the AK-47 MkII reproduces the qualities of the classic microphones it was based upon.

Sonically, theAK-47 MkIIis a remarkably hi-fidelity microphone with superior high frequency detail and a rich, thunderous low end that excludes the upper mid-range frequency bump often found in microphones in this price range. Instead, it has a delicate and intimate air that is usually found in more expensive microphones. The AK-47 MkII serves as a great microphone for vocals, electric guitar, acoustic and electric bass, and horns. 

The remote pattern selector, located on the power supply, provides 9 different polar patterns, giving the user a myriad of choices for how to record the source sound in a manner that will best complement their production. 

Each AK-47mkII microphone comes complete with M901 power supply, M801 25’ dual-shielded TX-7 tube microphone cable, M701 elastic shock mount and wooden microphone box.

  • TK47 Capsule
  • NOS Telefunken EF732 minature tube
  • BV8 transformer recreation
  • Shock Mount, cable
  • Wooden Mic Box
  • 5 year limited warranty
  • Modern PSU includes remote variable 9 polar pattern switch
More Information

Type: Condenser Pressure Gradient

Capsule: TK67D

Frequency Range: 20Hz / 20kHz

Polar Pattern: Omni, Cardioid, Figure 8 with 6 intermediate stages

Sensitivity: 16.5 mV/pa +/- 1 dB

THD at 1kHz at 1Pa: <0.3%

Output Impedance: 200 ohms

Maximum SPL: 125 dB

Non Linear Distortion: (for 1% THD @ 1KHz) 132dB

Self Noise: 10.5dBA

Tube Type: EF732 / 5840W

Power Type: Dedicated Power Supply with polar pattern selector

Size: 9 1/2" (241mm) length x 1 3/4" (44.45mm) diameter

Weight: 27oz (765g)

Supply Current: <1mA (120V) 135mA (6V)

Connected Via: XLR-7 (F), XLR-3 (M) output

Supplied Accessories: Power supply, wooden mic box, clasping shock mount, 25' Accusound dual-shielded cable, cardboard case

Optional Accessories: FC01 R-F-T Series Flight Case