XS Wireless 1 Dual is a 2-channel Wireless system for singers and presenters. Designed with ease of use in mind, these analog UHF systems feature a sleek dual-channel receiver with built-in antennas and the streamlined interface from Sennheiser's popular XS Wireless 1 series. Excellent live sound featuring Sennheiser's renowned evolution microphone capsules Antenna-switching 2-channel diversity reception Integrated antennas Automatic frequency management and synchronization via remote channel for easy setup Selectable UHF frequencies within a large bandwidth Up to 10 compatible channels