The Shure ULXD1-G57 is a digital wireless bodypack transmitter designed for ULX-D systems, offering clear 24-bit/48 kHz audio and robust RF performance within the 470-608 MHz frequency range. With a 138 MHz wide tuning range, it provides exceptional flexibility for regional and touring applications. Housed in a compact, rugged aluminum body, the ULXD1 features a TA4M connector compatible with lavalier mics, headsets, or instrument cables. Key features include AES-256 encryption for secure transmission, automatic gain adjustment, and IR sync for quick pairing with receivers. Power options include two AA batteries for up to 11 hours of operation, or the optional Shure SB900B rechargeable battery for over 12 hours with docking charge support. Additional features include a backlit LCD, 1/10/20 mW selectable RF output, and a removable 1/4-wave antenna for reliable, professional performance.