This version of the Nady 4W-1KU QUAD wireless system is a 1000-channel professional UHF wireless system with four HM-10 black headset microphones. The Nady 4W-1KU QUAD wireless system features proprietary companding and low-noise circuitry for an industry-best 120dB dynamic range and the clearest most natural sound available in wireless today. Nady’s flagship wireless system the W-1KU combines many stand out features that set this system apart in the wireless industry. Features include; Automatic Scanning of 1 000 UHF channels so finding interference-free frequencies takes only seconds and the transmitter synchronization happens in a flash – literally; True Diversity a dual antenna design that maximizes range and eliminates dropouts; an All Metal Housing is included for all receivers and transmitters made to withstand the rigors of live performances; and backlit LCD displays are included on the W-1KU receiver to indicate selected audio output volume level group/channel RF signal strength meter and A/B diversity status while all transmitters also have LCD display indicating selected group channel volume (input audio level) and battery level status. The W-1KU delivers the clearest most natural sound available and unlike many other professional systems is available in multiple channel configurations.