Shure – PSM 300 Wireless Transmitter P3T Band J13 on May 8, 2017 | Marketing Team Dependable wireless transmission and 24-bit digital audio combine to deliver a superior personal monitoring mix for every performance. Send 2 channels of audio to a bodypack receiver up to 300 feet (90 m) away, with patented Audio Reference Companding to ensure transparent sound quality with no artifacts or dropouts.