PNR aviation headset use like david clark bose aviation headset

USA russian australia aviation headset use like bose aviation PNR audio technology Full spectrum stereo response   USA russian australia fly headset use like david clark bose aviation headset  pilot headset / headphone with noise cancelling Microphone   Detailed Product Description PNR audio technology Full spectrum stereo response Each ear cup features an independent volume control PNR Aviation Headset Helicopter Use U174/U Plug Super Soft Double Foam Head Pad Noise-canceling electret MicrophonePrecision flex boom for perfect microphone placement Easy-to-wear super soft silicone gel ear sealsHeadband Size AdjustmentCoiled cord from headset to molded plug, 70CMAssembled strictly following the FAA TSO standards Color: Black, green Noise Reduction Ratings (NRR):24dB Specifications HeadphoneType: Dynamic (F50)Frequency Response:100Hz to 8 kHzSensitivity:95+/-5 dB SPL (1 kHz, 1 mW input per earcup side) full volume on ear simulatorImpedance:150 ohms (300 ohms each; wired in parallel)Rate Input:100mWMax. Input: 250mWMicrophone and Amplifier:Element Type: Noise-canceling electretFrequency Response:100Hz to 5 kHzOperating Voltage (supplied by aircraft ):8-32 Volts DC Matching Impedance: 150-1000 ohmsSensitivity:-33+/-4 dB (ref: 0dB SPL=20.0uPa at 1 kHz with 10 Vdc 150 ohms AC load)   General Operating Temperature: -20 to 70°CCordage: AN-1000AH Coiled cord from headset to molded plug, 70CMIntercom Connections Plug: U174/UWeights: AN-1000AH ----560gNoise Reduction Specifications: Attenuation Frequency Band__________20Hz~20KHzMain Attenuation Frequency Band__________20Hz~600HzAttenuation Capability__________18~21dBPower Consumption__________30 mWHeadset size range Height: 10 to 14 cm   

PNR aviation headset use like david clark bose aviation headset