Standard or custom referee mic-earpiece

PHO 521

New product

This headset includes a very sensitive microphone for an optimum audio quality. Durable and solid combined micro-headset adapted to all ear types.


Delivered with generic earphone kit: Right and Left ear units & 3 silicon inserts.

Available with custom molded earprints for best intelligibility in noisy stadiums.

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Key benefits

  • PHO211 1

    Molded earprint (resin ear mould), customized to the user ear

  • PHO211 2

    Very high-quality boom-mic headset

  • PHO211 3

    Long-lasting comfort, no parts covering or hanging off the outer ear

  • PHO211 4

    No pressure around the head or discomfort: total freedom

  • PHO211 5

    Excellent speech intelligibility: crystal-clear sound

Key features

  • Microphone sensitivity: -44 (±4) dB re. 1V/Pa at 1 kHz
  • Microphone type: Electret, noise canceling
  • Ear speaker sensitivity: 94 dBA @ 150 mVRMS
  • Ear speaker impedance: 50 Ω DC, 100 Ω @ 1 kHz
  • Cable pull force: 50 N
  • Operational temperature range: -20°C - +60°C
  • Electromagnetic compatibility (EMC) EN 55022, EN 55024

Use cases