OVERVIEW Shure Microflex MX400 Series microphones are miniature gooseneck-mounted electret condenser microphones designed primarily for speech and vocal pickup. They can be mounted on lecterns, pulpits, or conference tables. All models include a preamplifier and are available with interchangeable cardioid, supercardioid, or omnidirectional cartridges.


  • Wide dynamic range and frequency response for accurate sound reproduction across the audio spectrum
  • Interchangeable cartridges provide the right polar pattern for every application
  • Balanced, transformerless output for increased immunity to noise over long cable runs
  • Shock mount that provides over 20 dB isolation from surface vibration noise
  • Locking flange mount for permanently securing microphone to lecterns, pulpits, or conference tables
  • Snap-fit foam windscreen


Frequency Response 50 to 17,000 Hz

Polar Pattern  

Output Impedance (at 1000 Hz) Rated at 150 Ω (180 Ω actual)

Open Circuit Sensitivity (at 1 kHz, ref. 1 V/Pascal*)

  • Cardioid: –35.0 dB (17.8 mV)
  • Supercardioid: –33.5 dB (21.1 mV)
  • Omnidirectional: –27.5 dB (42.2 mV)

Maximum SPL (1 kHz at 1% THD, 1 kΩ load)

  • Cardioid: 124.2 dB
  • Supercardioid: 122.7 dB
  • Omnidirectional: 116.7 dB

Equivalent Output Noise (A-weighted)

  • Cardioid: 28.0 dB SPL
  • Supercardioid: 26.5 dB SPL
  • Omnidirectional: 20.5 dB SPL

Signal to Noise Ratio (referenced at 94 dB SPL)

  • Cardioid: 66.0 dB
  • Supercardioid: 67.5 dB
  • Omnidirectional: 73.5 dB



Barcode # 42406221771
Brand Shure

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