Sennheiser MD 421

Sennheiser MD 421

The MD 421 (also written MD421) is a professional studio cardioid microphone manufactured by the Sennheiser Corporation. Here are some of its features and specifications.

  • Frequency Response: 30 Hz to 17 kHz
  • Directional Characteristic: Cardioid
  • Impedance: 200 Ω (approx)
  • Sensitivity: 2 mV at 94 dB SPL