Supreme Pro Headset, Headband (no cover), Dual Comm, Dynamic LMIC Supreme Pro Communication headsets offer high-performance electronic circuits that compress sound, rather than cut it off. Ambient sound is detected by two microphones outside the cup and reproduced through speakers inside. This helps prevent damage from harmful noises (such as gunshots) while enabling the wearer to hear important, yet harmless ones (such as commands and instructions). With Supreme Pro, your hearing is always protected, but you are never isolated.