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Lightweight Broadcast and Communications Headset with Noise-Cancelling Cardioid Dynamic Microphone


The HSD 200 SR is a combination stereo headset and close-talking dynamic microphone intended for modern hands-free operation in a communications environment. The microphone response has been tailored with a gentle roll-off below 200 Hz and a broad peak centered at 3 kHz to increase speech intelligibility.

The semi-open, supra-aural headphone fittings provide a comfortable fit, while the semiopen design enables the user to directly hear sounds and speech originating near by. Attention has been paid in the design to avoid leakage from the headphones directly into the microphone. In typical AKG fashion, the cable which contains both headphone and microphone leads exits only from one side of the assembly, which promotes comfortable and convenient wearing of the HSD 200 SR.


  • Semi-open, supra-aural stereo headphones

  • Shock-mounted dynamic cardioid microphone with speech-optimized frequency response

  • Both headphone and microphone leads exit through a single cable with bare leads at the end for ease in attaching interconnect hardware


  • Microphone:

  • Transducer principle: Dynamic (low noise)

  • Frequency range: 50 Hz to 11 kHz

  • Polar pattern: Cardioid

  • Sensitivity at 1 kHz: 1 mV/Pa (-60 dB re 1 V)

  • Equivalent noise level: Less than 24 dB-A

  • S/N ratio (A-weighted): 70 dB

  • Impedance: 650 ohms

  • Recommended load impedance: Greater than 1000 ohms

  • Headphones:

  • Transducer principle: Dynamic

  • Fitting type: Semi-open, supra-aural

  • Sensitivity (per phone): 100 dB SPL at 1mW

  • Frequency range: 20 Hz to 28 kHz

  • Rated impedance: 100 ohms (elements wired in parallel)

  • Cable length: 10 ft. (3 m)

  • Finish: Non-reflective black

  • Net weight: 8.8 oz. (250 g)

  • Shipping weight: 1 lb. (450 g)

  • Included accessory: Foam windscreen

  • SR/OC has open cable ends


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