This D50 2-channel body-pack system features the Audio-Technica LINK-enabled 2-channel receiver and two ATW-DT3201 compact body-pack transmitters. The half-rack receiver operates in one of two switchable RF modes: normal mode (Antenna Combining Diversity) or robust mode (MRC True Diversity) for greater RF stability. Up to four receivers can be linked and operated without antenna distribution, requiring only a single pair of antennas. Plus, the system’s HD (high-density) mode gives users the option of expanding the number of usable frequencies from the standard 17 within a 6 MHz TV channel block to 47 frequencies in HD – a feature that can be especially useful in the congested RF environments of large cities. The receiver comes with an AC adapter, but can also be powered by PoE+, either exclusively or as a backup power source for the AC. The ATW-DT3201 is a compact body-pack transmitter is equipped with a cH-style screw-down 4-pin input connector for secure connection with compatible lavalier mics, headworn mics, and cables. External control buttons and an OLED status display make the transmitter easy to use, and a special SideTrack function allows users to switch audio to a second output — providing discrete live communications with fellow performers or audio engineers. The transmitter is powered by a custom-designed lithium-ion battery, providing best-in-class battery life. The battery can be charged in the transmitter, using the ATW-CHG6 two-bay charging station (sold separately), or can be removed from the transmitter and charged separately in the ATW-CHGA6 battery charger (Included with this system).eers.