Neumann U 47 fet Studio Condenser Microphone

Large Diaphragm Condenser Microphone

The U 47 fet was first manufactured from 1972 to 1986, and since then has been firmly established in the range of microphones used by many well-known studios. In addition to serving as a soloist microphone, it has become legendary especially for the recording of bass-heavy instruments and for the direct miking of loud amps.

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The U 47 fet Collector’s Edition is Neumann’s definitive microphone, reissued in the year 2014. Production of this timeless mic has resumed according to the innovative vintage production documents and schematics. It is shipped with a premium wooden case and a unique certificate displaying the microphone’s serial number.

In terms of mechanical design, a lot of the components used by the U 47 fet also feature in the U 87. The U 47 fet is a condenser microphone with a cardioid directional characteristic and fet 80 circuit technology, characterised chiefly by a wide dynamic range. The K 47 double large-diaphragm capsule was already utilised in the U 47, the fabled tube-based predecessor of the U 47 fet. The K 47 provides a slight boost in the range above 2 kHz.

If necessary, a switchable low-cut filter pushes the lower cutoff frequency electronically from 40 Hz to 140 Hz, thus subduing unwelcome low frequencies (such as impact sound and wind noise), or helping to offset for the proximity effect. Switchable attenuation can decrease transmission levels by 10 dB, facilitating the processing of very high sound pressure levels of up to 147 dB. Furthermore, to prevent overloading of the connected preamp, the output signal can be reduced by 6 dB via a switch on the bottom of the microphone.

In order to guarantee sure stable positioning, the microphone is swivel-mounted on an assimilated bracket. The bracket stand connector has 5/8"-27 internal thread, with an adapter for 1/2" and 3/8" threads. The microphone cable can be safeguarded at the side of the stand connector, by using the knurled nut to fasten it in the slot (for cable diameters of up to 5 mm). The microphone is available in classic nickel.

  • Linear frequency response with a slight boost in the range between 2 and 5 kHz for more clarity to the human voice
  • Useful amount of proximity effect, particularly good for thin voices
  • bass roll-off at 40 Hz, switchable high-pass filter at 140 Hz
More Information

Acoustical operating principle: Pressure gradient transducer

Directional pattern: Cardioid

Frequency range: 40 Hz ... 16 kHz

Sensitivity at 1 kHz into 1 kohm: 8 mV/Pa

Rated impedance: 150 ohms

Rated load impedance: 1 kohms

Equivalent noise level, CCIR: 25 dB

Equivalent noise level, A-weighted: 18 dB-A

Maximum SPL for THD 0.5%: 137 dB

Maximum SPL for THD 0.5% with preattenuation: 147 dB

Signal-to-noise ratio, CCIR (rel. 94 dB SPL): 69 dB

Signal-to-noise ratio, A-weighted (rel. 94 dB SPL): 76 dB

Maximum output voltage: -3.3 dBu

Supply voltage (P48, IEC 61938): 48 V ± 4 V

Current consumption (P48, IEC 61938): 0.5 mA

Matching connector: XLR3F


Weight and Dimensions

  • Weight: 710 g
  • Diameter: 63 mm
  • Length: 160 mm
  • U 47 fet i microphone
  • Wooden case
  • Certificate
  • Operating manual