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Home > Products > Muff Headsets > CH-21AN Behind the Head Active Noise Cancellation w/ Red Button PT
CH-21 Behind the Head
Active Noise Cancellation
w/ Red Button PTT


  • Wear with helmet, hard hat
    or logo cap
  • Electronic active noise
    cancellation circuitry installed in
    any Cobalt dual ear muff headset
  • Increased attenuation of
    outside sounds by up to 17dB
  • Not hearing protection rated
  • HD 2 year warranty


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Product Features:

Cobalt muff headsets offer premium quality and features that rate them world class, but with value always in mind.

The Cobalt blue "ecto-skin" coating provides a no glare finish with UV protection, acoustic baffling, with a surface that rejects scratches and scuffs. Several noise canceling mic types are available: including non-preamped, pre-amped, dynamic and theCobra technology noise canceling.

Premium details include full flex boom, mic mute switch and volume control, high efficiency samarium cobalt speakers floated in a foam frame. Each headset comes standard with comfort-fit foam ear seals, washable cloth ear covers and mic wind screen.

Headset cords for portable radio or Cobalt fire truck intercom attach, and are easily removable/changeable using a multi-pin miniature round locking connector.

Versions of headsets and cords can be used on other intercoms (wired and wireless), for telephony or with a Cobalt tactical kit with large round inline PTT switch. For more information, refer to our tactical switch, intercom and radio connector pages.