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Sennheiser Electronics Corporation MD 21U

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  • MSRP: n/a


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MD 21U Documentation

OmnidirectionalSennheiser Electronics Corporation MD 21U

Omnidirectional Dynamic Microphone

The Sennheiser MD 21 U is an omnidirectional handheld/desktop dynamic microphone, intended for news gathering and broadcast. It is one of Sennheiser’s classic dynamic mics, dating to 1953.

The mic has a wide frequency range, with a flat response from 60Hz–1500Hz and a smooth +6dB presence boost centered at 8kHz. The mic’s response rolls off rapidly below 50Hz and above 15kHz.

The mic’s polar pattern is omnidirectional below 1kHz, with a narrowing response at higher frequencies.

The original MD21, demonstrated at the Industrial Fair in Hanover in 1954, had a “hammertone” gray finish. The mic has changed over the years, both cosmetically and in the construction of the moving-coil cartridge.

MD 21UIn 2004, in celebration of the microphone’s 50th anniversary, Sennheiser released a limited edition of 100 MD21 mics, finished in the original hammertone gray, with the signature of Prof. Dr. Fritz Sennheiser on the side.

The MD 21 U ships with an integrated hard mount.

The Sennheiser Electronics Corporation MD 21U is also known as: MD21U, MD21, MD21HN.

The mic was released in 1953.


Pickup Patterns Pads & Filters
Omnidirectional (1.8 mV/Pa; 40 - 18,000 Hz)
Coil Diameter Impedance SPL/Noise
n/a 200 Ohms (Low) SPL n/a
Weight Length Max Diameter Interface(s)
280g (9.88oz) 137mm (5.39'') 67mm (2.64'')
  • 3-pin XLR male (1)
Power Specifications

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