The Audio-Technica ATW-DA49a is an active UHF diversity antenna distribution system designed to allow a single pair of antennas to support multiple wireless receivers. Operating across a wide 470–990 MHz frequency range, it enables one antenna pair to feed up to four wireless systems from a single unit. This makes it an efficient solution for professional audio installations where multiple receivers need to operate reliably while minimizing antenna clutter.

Engineered to complement Audio-Technica wireless systems, the ATW-DA49a is also suitable for other wireless systems equipped with external BNC antenna connections within the same frequency range. It supports both directly connected and remote-mounted antennas and provides 12 V / 250 mA antenna power from each input for active antennas or boosters. With a high OIP3 rating of +32 dBm, the system offers strong protection against intermodulation, ensuring stable RF performance even in complex, multi-channel wireless environments.