HDA 300

The HDA 300 is a pair of closed, dynamic headphones designed for use with audiometers.


  • Suitable for high frequency audiometry
  • High passive ambient noise attenuation – patients only hear what they are supposed to hear
  • Excellent repeatability of readings
  • Excellent comfort fit even for long testing periods thanks to soft, replaceable ear pads and two padded headbands
  • Single-sided cable for tangle-free sessions
  • Equipped with two mono plugs for immediate use
  • Foldable ear cups for portable use and easy storage
  • Design approved by the PTB (German organisation for type approvals, a national standards organisation similar to the British Standards Institute or the American National Bureau of Standards).

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