Countryman MHHW3HH05BS3
ISOMAX Hypercardioid Headset Mic for Sennheiser, in Black


Countryman's MHHW3HH05BS3 is a part of their ISOMAX Headset microphone lineup. This particular unit is designed for use with Sennheiser transmitters (for compatibility, see below - all sold separately), features Hypercardioid polar pickup pattern, and comes in Black.

ISOMAX Headset Microphones
One of the best-sounding headset mics in the industry, Countryman's Isomax Headset Mic is a favorite of numerous high-profile performing artists.

It's sleek, comfortable, and stays securely in place, even during dance-oriented performances. It focuses right in on its source and captures warmth with its wide frequency range. It rejects unwanted sounds and monitor feedback even better than most handhelds. Plus it tolerates sweat, weather, and makeup better than other headsets. Best of all, it's affordable and durable, providing a long life of excellent sound. Supplied with wind screen.


  • Extremely popular among high-profile rock performers on stage and in the studio
  • Excellent choice for trade show presenters, auctioneers, lecturers, clergy, etc.

Countryman MHHW3HH05BS3 ISOMAX Headset Mic Features:

Style & Comfort

  • Flexible, telescoping band fits snugly and comfortably around the back of the head
  • Easily concealed under the hair
  • Telescoping boom can be bent to provide a custom fit


  • Very high-quality audio
  • High rejection of feedback and unwanted sounds
  • Wide 20 Hz to 20 kHz frequency response shaped like the world’s most popular vocal microphone
  • Truly dynamic warmth with condenser clarity
  • Reduces feedback - nearly perfect Hypercardioid pattern handles hot monitors better than most handhelds

Countryman MHHW3HH05BS3 ISOMAX Headset Mic Specifications:

Note: additional details available by clicking on the "ISOMAX Headset Datasheet" under the "DOCUMENTATION" tab, above.

  • Polar Pickup Pattern: Hypercardioid
  • Frequency Response: 20 Hz to 20 kHz
  • Power Requirements: 15 V at the microphone under load. 4 mA total current drain.
  • Sensitivity: 1.4 mV/Pascal
  • Color: Black
  • Cable length: 5ft
  • Compatibility (as of August, 2017):
    • Sennheiser:
      • SK 50
      • SK 250
      • SK 3063
      • SK 5012
      • SK 5212
      • SK 9000

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