SC 230/260 ATC/C3

Sennheiser SC 230 ATC/C3 AG (single sided) and SC 260 ATC/C3 AG (double sided) are robust, wired headsets designed for Air Traffic Control and C3 Communications professionals who demand Sennheiser Voice Clarity, all day comfort and maximum durability. AG versions include Sennheiser ActiveGard®.
For more information choose a ATC/C3 Team Contact
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The SC 230/260 ATC/C3 AG series of robust headsets is designed to meet the daily challenges faced by Air Traffic Controllers and C3 operators. Hearing and being heard clearly is fundamental for safety and confidence in ATC/C3 environments and the series delivers on both counts, thanks to Sennheiser’s legendary audio expertise. A unique ear cup shape and a built-to-last design make the headsets both comfortable enough for long hours of wearing and tough enough to withstand years of daily use. A fully adjustable metal headband with numbered grooves and soft leatherette ear cups make finding and keeping the perfect fit simplicity itself.

And with name tag personalization, it’s always possible to identify your own headset. Sennheiser ActiveGard® technology protects users’ hearing against acoustic injury caused by a sudden sound burst on the line, with no risk of communication drop-out.


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

  • Perfect speech transmission Noise-cancelling microphone filters out ambient noise for optimum speech clarity to reduce “call-back/read-back” events

  • Sound protection from acoustic injury caused by sudden sound bursts on the line with Sennheiser ActiveGard® technology

  • Two channel application for air and land based communication on SC 260 ATC/C3 AG

  • Perfect fit CircleFlex™ dual-hinge ear cup system adapts seamlessly to the ear for all-day wearing comfort

  • Built for durability with unique robust construction and metal reinforced headband

  • Name tag personalization – easy user ID helps avoid wearing colleagues’ headset

Technical Data

  • Impedance
    SC 230: 200Ω SC 260: 50Ω
  • Frequency response (Microphone)
    150-6,800 Hz
  • Transducer principle (Microphone)
    Electret-microphone, noise-cancelling
  • Frequency response (Headphones)
    50-18,000 Hz
  • Characteristic SPL
    103 dB SPL at 1 kHz, 1 mW, 107 dB SPL at 1 kHz, 1 V
  • THD, total harmonic distortion
    <1 % at 102 dB SPL at 1 kHz
  • Contact pressure
    approx. 1.9 N
  • Ear coupling
    supra-aural (on ear)
  • Connection cable
  • Transducer principle
    dynamic, open
  • Weight
    SC 230: 58 g/2.05 oz SC 260: 86 g/3.04 oz
  • Storage temperature
    -55 °C - +70 °C
  • Operating temperature
    -15 °C - +55 °C
  • Output voltage
    Sensitivity: 38dBV, +/- 3dB
  • Color
  • Operating voltage (stand alone)
    1-10 V DC


  • Fact Sheets
    • SC 230&260 ATC/C3 Fact sheet (910 KB) Download

  • Digital Brochures
  • Safety Guides
    • SC 200 & 600 ATC series safety guide (590 KB) Download

  • EU Declaration of Conformity
    • EC Declaration of Conformity (240 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: