This is the NFMI enabled connectorized model of the AMP Headset. NFMI plugs and Downlead are sold separately and not needed for use. 

For leading-edge ear protection and unprecedented audio quality, choose the Ops-Core AMP® Communication Headset. This advanced communications headset integrates seamlessly with Ops-Core helmets (and other ARC rail equipped helmets) and accessories to create a lightweight protective headborne system for any mission and environment. AMP's unique 3D Hear-Through Technology and optional NFMI earplugs provide double hearing protection that restores and enhances natural hearing and sound localization while maintaining clear communication for enhanced situational awareness. With a noise-cancelling microphone that mitigates all background noise, AMP is the ideal communications headset to wear in any unpredictable environment. This ergonomically designed headset can be configured to meet a wide range of communications needs and delivers ear protection while providing optimal comfort and a streamlined profile. This noise-cancelling headset has a user-based design and can be easily adapted to either headband or helmet configurations, and the optional Rail Mount Kit increases helmet stabilization. AMP features an integrated fixed downlead connection point and quick release downlead connection (depending on model). The AMP Communication Headset is CE approved EN 352 and available in Berry Amendment compliant configurations.