Wireless in-ear monitoring system from Shure’s PSM300 series, operating in the L19 frequency band (630–654 MHz). It includes the P3T transmitter and the P3RA premium metal bodypack receiver. The system features 24-bit digital audio processing, infrared synchronization, MixMode and stereo modes, and a frequency scanner for quick setup. It supports up to 15 simultaneous systems and offers a range of up to 90 meters. Power is provided by AA batteries or the optional SB900A rechargeable battery, with up to 7 hours of runtime.