Amplified U94 Push-To-Talk System with Universal Quick Disconnect Connector (Replaces Hirose)Amplified Push To Talk system allows low impedance military communications headsets (Peltor Comtac, MSA Sordin, etc) to work with high impedance civilian handheld or general aviation radio systems If you've plugged your military headset into a civilian radio and are having trouble being heard on the other end, this will fix your problem without needing to swap your headset's mic out or use an separate in line amplifier NATO standard TP 120 U 174 U 93