Neumann M 147 Tube

Neumann's M147 Tube is a vacuum tube condenser microphone with cardioid characteristic. At the heart of this microphone is the K47 dual diaphragm capsule, inherited from this model's now legendary predecessors, the U47 and the M49.Following the capsule is a tube that functions as an impedance converter. The next stage is an efficient, transformerle... moress output circuit, that guarantees an extremely low self-noise level.The M147 Tube can feed extremely long microphone cables without affecting the quality of the audio signal. Like all Neumann tube microphones, the M147 Tube comes with an elegant satin nickel finish.The microphone is delivered as a complete set in a high-quality aluminum case. Included with the microphone are a microphone cable, a metal swivel mount for a mic stand, and a compact universal power supply for standard mains sockets.ApplicationsThe famous capsule, together with complimenting tube characteristics, makes the M147 Tube especially well suited as a vocal microphone. 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.IncludesM147 Tube MicrophoneN149A Power Supply incl. Power CableSG2 Swivel MountKT8 Microphone CableDust CoverAluminum CaseFeatures:Universal tube microphonePressure gradient transducer with the large diaphragm capsule from the legendary U47 and M49Transformerless circuitryLow self noise levelAcousticThe M147 Tube is addressed from the side, where the microphone body has the diamond-shaped Neumann company logo. The black color identifies tube microphones. The capsule is equivalent to the one used in the U47, and is the deciding factor in determining the sound characteristic. It has a flat frequency response to the upper midrange, and a boost of up to 3dB above 2kHz. The head-grille design is a smaller version of the U47. It protects the capsule effectively against popping and wind noise.Polar Pattern - the M147 Tube has a cardioid characteristic, leaning more toward super-cardioid due to its distinctive capsule design. At higher frequencies the pattern becomes more directional. This is very similar to the model after which this new tube microphone was patterned, the U47, and the successor, the U47fet.Electrical:When compared to other microphones, the impedance converter used in the M 47 Tube is distinguished by its extremely low self-noise level of only 14dB-A / 25dB CCIR weighted.Similar to the M149 Tube, the M147 Tube combines a specifically selected vacuum tube (triode) with modern circuitry. This technique takes full advantage of the special transfer characteristics of the tube and passes the processed audio signal of the capsule to the microphone output, without any coloration or unwanted side effects.The tube amplifies the capsule's signal by approximately 10dB, thus preventing any possible influences from subsequent electronics. The M147 Tube delivers