PH-100HC ANR Helicopter Headset reduces the unwanted ambient noise in the cockpit by using both Passive Noise Reduction (PNR) and Active Noise Reduction (ANR).use this technology, low frequency ambient noise is significantly reduced and important communication can be heard in a clear, crisp manner. PH-100HC will continue to operate as a PNR headset should the ANR become inactive for any reason such as low or no battery power.

PH-400AH aviation helicopter headset For pilots enjoy the all-day comfort and clear audio performance. With Full flexible boom, noise-cancellng microphone and wind blocking foam mic muff. Clear Hear performance speakers and a 23dB NRR noise reduction rating, Air Traffic Control will come through loud and clear. With Military grade U174 plug, tough durable coil cord, and ultra-lightweight Carbon fiber ear shell the PH-400AH headset is the perfect choice for all of your flying adventures.