The PSM 300 from Shure is a professional-quality Wireless in-ear monitoring system that delivers 24-bit digital audio and offers Wireless freedom to performers. It can be used in several environments for audio application such as live stage, theater, rehearsals, houses of worship, and more. It features an audio reference compander that ensures a clearer sound and provides lower noise and audio that have no artifacts. The Wireless coverage range extends to over 300' and the system helps eliminate dropouts. The PSM 300 monitor system is easy to setup and operate; it offers one-touch frequency scan and sync to find and assign a clean Wireless channel. Adjust the volume using MixMode or stereo mode to create a personal mix from two channels of audio.