HME 110 ATC/C3

Sennheiser HME 110 ATC/C3 are premium-quality, double-sided headsets for air traffic controllers and C3 operators requiring exceptional passive sound attenuation, uncompromising sound performance and comfort.
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Sennheiser HME 110 ATC/C3 are double-sided headsets offering superior passive attenuation for air traffic controllers or C3 operators in particularly noisy environments. A noise-cancelling microphone ensures excellent speech intelligibility and adjustable sensitivity. The lightweight design, soft ear pads and cushioned headband provide excellent comfort even during long sessions. Switchable from mono to stereo for dual communication sources, it has an integrated volume control on the head cup. The microphone can easily be repositioned to the left or right side via flexible boom arm with quick-fix feature for accurate placement. Variants include HME 110 ATC with 1.5m cable and 6.35/5.25mm jack and HME 110 C3 with 1.85m open-ended cable.


  • Sennheiser Voice Clarity for accurate communication, provides a natural listening experience

  • Excellent speech transmission Noise-cancelling microphone reduces ambient noise to improve intelligibility and reduce “call-back/read-back” events

  • Noise reduction with closed ear cups offering passive attenuation to 40 dB

  • Quick volume adjustment with built in volume control on ear cup. Cab be disabled if needed

What's in the box?

  • Headset 110 ATC/C3
  • Cable clip
  • Safety Guide
  • Quick Guide

Technical Data

  • Impedance
  • Frequency response (Microphone)
    100 - 5,000 Hz
  • Transducer principle (Microphone)
    Electret, noise cancelling, uni-directional
  • Frequency response (Headphones)
    45 - 15,000 Hz
  • Microphone
    Load resistance 150 - 2,200 Ohm
  • Characteristic SPL
    90 dB SPL (1 kHz, 1 mW) / 98 dB SPL (1 kHz, 1 V)
  • THD, total harmonic distortion
    < 1 % at 100 dB SPL (300 - 3,000 Hz)
  • Contact pressure
    10 N
  • Ear coupling
    closed, circumaural
  • Weight
    350 g/12.35 oz
  • Storage temperature
    -55 °C - +70 °C / -67 F to +158 F
  • Operating temperature
    -10 °C - +55 °C / +14 F to +131 F
  • Color


  • EU Declaration of Conformity
    • EU Declaration of Conformity (190 KB) Download

  • Digital Brochures
  • Fact Sheets
    • HME 110 ATC C3 Fact Sheet (210 KB) Download

WARNING (for California residents only): This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects and other reproductive harm. For more information go to: