Neumann KMR 81 I mt Review: Build quality, body, and sound

Alistair Vance
Written by Alistair Vance

May 19, 2026

Neumann KMR 81 I mt

Neumann KMR 81 I mt Review: Build quality, body, and sound

Key characteristics of Neumann KMR 81 I mt

  • Characteristics: Super-cardioid / lobar
  • Acoustic operation: Interference receiver
  • Frequency range: 20-20.000 Hz
  • Nominal impedance: 150 Ohm
  • Sensitivity: 18 mV/Pa
  • Bass roll-off / High pass filter
  • Port: XLR
  • Diameter: 21 mm
  • Length: 226 mm
  • Weight: 145 g
  • Requires 48 V Phantom power
  • Incl. foam windscreen
  • Colour: Black

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Neumann KMR 81 I mt Review: Build quality, body, and sound

Neumann KMR 81 I mt Review: Build quality, body, and sound

Neumann KMR 81 I mt Review: Build quality, body, and sound

Neumann KMR 81 I mt Review: Build quality, body, and sound

Additional Information

Customer Review Summary

The Neumann KMR 81 I mt is an exceptional microphone known for its precise, warm, and rounded sound. Its directional capabilities are impressive, making it an ideal choice for outdoor recordings, especially when paired with a Rycote windscreen. However, it does require careful handling and can be somewhat demanding on the operator, particularly in multi-actor scenarios.

While the audio quality is superb, the microphone is not without its drawbacks. The price may be a concern for some, and it’s worth noting that the KMR 81 now comes without a mounting clip, instead featuring a less appealing plastic tube for protection. This is a departure from earlier versions that included a more elegant leather case.

In terms of performance, this supercardioid microphone excels with great sensitivity and sound definition, though it can struggle in indoor settings due to its shotgun design and rear lobe, which can pick up unwanted resonances. Overall, it is a fantastic investment for film and video production, particularly for boom applications, offering high-quality sound that makes it a top choice for professionals.

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In summary, the Neumann KMR 81 I mt is a highly regarded microphone, perfect for those who appreciate its warm sound and directional focus, provided they are mindful of its limitations in certain environments.



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Alistair Vance

Based in Bristol, Al has spent over a decade mixing local bands before specialising in hybrid studio consulting. He’s obsessed with the price-to-performance ratio, helping musicians achieve a "Radio Ready" sound without the need for a £50,000 Neve console. No fluff, just honest gear reviews to get your tracks sounding professional on a real-world budget.

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