Sennheiser Aviation NoiseGard Headphones HMEC 25-KA - (NOT TESTED)

Item description from the seller

Sennheiser NoiseGard HMEC 25-KA Aviation Headphones. Item is pre-owned, in used condition and is being sold AS-IS. This item was purchased from an estate sale and has NOT been tested. Headset is in good overall condition. Some signs of scuffing wear are visible on the foam ear pads and on foam padding on the underside of the over-head portion. Please review the photographs closely and contact us with any questions. We do try our best to determine the functionality of our items, but if an item is determined to not be as described, we will refund the cost of the item including shipping. DESCRIPTION : Sennheiser HMEC25-KA ANR Headset - ORIGINAL RETAIL $565 Sennheiser HMEC25-KA Aviation Headset features: Extreme lightweight comfort (5.9 oz.) closed back supra-aural headset 15 dB active noise cancellation 16 dB passive noise reduction Noise cancelling electret microphone with rotating boom Split headband for comfort and fit In-line battery pack Complies with FAA/JTSO-C57A, C58A SENNHEISER HMEC25-KA AVIATION HEADSET SPECS: Headphone Specs: Transducer Principle Dynamic, closed back Frequency Response: 16-22,000 Hz Nominal Impedance: 200 ohm (active), 170 ohm (passive) Attenuation 15 dB (active), 16 dB (passive) Weight Wo Cable approx: 6 oz. Operating Voltage: Not applicable Ear Coupling: Supraural Headband Pressure: approx. 2.5 N Sensitivity: 94 dB Distortion: < 1% Headset Microphone Specs Transducer Principle Electret, Noise Canceling Frequency Response: 300-5000 Hz Output Voltage: 8-16 VDC, 6mA Sensitivity: 400mV @ 3 dB (incl. preamplifier) Connectors: PJ068, 1/4 phono

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