Neumann M 147 Studio Tube Condenser Microphone

Vacuum Tube Cardioid Condenser Microphone (Nickel)

The famous capsule, together with complimenting tube characteristics, makes the M 147 Tube especially well suited as a vocal mic. In addition, it is a superb spot mic for all types of musical instruments. The extremely low self-noise of its tube circuitry makes the mic perfectly suited for use in modern recording chains, analog and digital.

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Neumann’s M 147 Tube is a vacuum tube condenser microphone that still enjoys a cardioid characteristic. The K 47 dual diaphragm capsule takes pride of place at the foundation of this the M 147’s mechanics, a component inherited from this model's now mythical predecessors, the U 47 and the M 49.

Operating as an impedance converter, a tube comes after the capsule. Guaranteeing an exceptionally low self-noise level, the next stage is an efficient, transformerless output circuit. This pioneering combination of current tube technology with the most advanced solid-state circuitry was critical in awarding the 1997 TEC Award to the related M 149 Tube mic.

Like all Neumann tube microphones, the M 147 Tube comes with a stylish satin nickel finish. The M 147 Tube can also link tremendously long microphone cables without affecting the quality of the audio signal. Additionally, it has a flat frequency response from 20 Hz to well above 20 kHz, and a boost of up to 3 dB above 2 kHz.

The microphone is shipped as a complete set in a premium aluminium case. Included with the microphone are a cable, metal swivel mount for a mic stand and a compact universal power supply for standard mains sockets. 

  • Universal tube microphone
  • Pressure gradient transducer with the large diaphragm capsule from the legendary U 47 and M 49
  • Transformerless circuitry
  • Low self noise level
  • Comes with swivel stand mount made of metal, universal power supply, and cable in an attractive aluminium case
More Information

Acoustical operating principle: Pressure gradient transducer

Directional pattern: Cardioid

Frequency range: 20 Hz ... 20 kHz

Sensitivity at 1 kHz into 1 kohm: 20 mV/Pa

Rated impedance: 50 ohms

Rated load impedance: 1 kohms

Equivalent noise level, CCIR1): 24 dB

Signal-to-noise ratio, (rel. 94 dB SPL): 70 dB

Typical SPL (tube characteristic): 114 dB for THD < 0.5 %, 134 dB for THD < 5 %

Maximum output voltage: 8 dBu

Dynamic range of the microphone amplifier (A-weighted): 102 dB for THD < 0.5 %, 122 dB for THD < 5 %

Powering: Power supply N 149 A

Matching connector: Microphone: DIN 8F, Power Supply: XLR3F


Weight and Dimensions

  • Weight:  460 g
  • Diameter: 57 mm
  • Length: 142 mm
  • M 147 Tube microphone
  • N 149 A power supply incl. power cable
  • SG 2 swivel mount
  • KT 8 microphone cable
  • Dust cover
  • Aluminium case