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Thanks to digital recording and ultra-clean processing, many engineers find themselves looking for tube microphones to restore a more “analog” sonic character. The Neumann M 147 is a tube microphone designed specifically for 21st century recording systems. Its acoustic design is inspired by the legendary U 47, which revolutionized studio recording in the 1950s with its superior sound quality and is still used daily in top studios around the world. The M 147's head amplifier combines classic tube circuitry with an advanced solid-state output stage for a vintage sound that's both modern and powerful.
The M 147 head grille is more than just a visual expression: It is a slightly more compact version of the iconic U 47 capsule head, partly recognized for its legendary sound. Most importantly, it shares the same sound transducer, the classic K 47 large diaphragm condenser capsule, known for its exceptional combination of warmth and presence. The capsule signal is amplified by a conventional tube circuit using a specially selected subminiature triode. While vintage microphones relied on large, expensive audio transformers for final impedance conversion, the M 147 uses a state-of-the-art transformerless solid-state output stage, which allows for long cables of up to 'at 300 m without transmission losses and guarantees a very direct sound with unrestricted bass response.
Features:
- Capsule of the legendary U47 and M47
- Pressure gradient
- Polar pattern: cardioid
- Frequency response: 20 Hz - 20 kHz
- Output sensitivity: 20 mV/Pa
- Nominal output impedance: 50 Ohm
- Recommended load impedance: 1000 Ohm
- Equivalent SPL (CCIR 468-3): 24 dB
- Equivalent noise level according to DIN / IEC 651: 12 dB-A
- Signal-to-noise ratio, according to CCIR 468-3 (at SPL level of 94 dB): 70 dB
- Signal-to-noise ratio, A-weighted (at 94 dB SPL): 82 dB
- Maximum sound pressure level: <114 dB (for harmonic distortion = 0.5%) / 134 dB (for <5%)
- Maximum output voltage: 8 dBu
- Amplifier dynamic range: 102 dB (for harmonic distortion <0.5%) / 122 dB (for <5%)
- Power supply N 149 A
- Dimensions: 142 x 57 mm
- Weight: 460 g
