FEATURES PSM®300 Stereo Personal Monitor Systems deliver reliable wireless freedom to every corner of the stage. Patented Audio Reference Companding ensures the clearest sound, with ultra-low noise and no artifacts. Easy to setup and operate, PSM 300 systems offer one-touch frequency scan and sync to find and assign a clean wireless channel. Adjust the volume and use MixMode® technology or stereo mode to create a personal mix from two channels of audio. P3TRA215CL features SE215 Sound Isolating™ Earphones, all-metal components with optional receiver rechargeability, and more advanced receiver controls. 24-Bit digital audio provides clear, detailed sound Up to 90 dB signal-to-noise ratio Exceptionally wide stereo separation Solid analog RF connection over a 300 ft (90 m) range Half-rack, single-channel transmitter includes rackmount kit P3RA professional bodypack systems available with SE215 Sound Isolating Earphones Includes P3RA, P3T, SE215, rackmount and hardware kits, ¼ wave antenna, BNC bulkhead adapter, BNC cable, power supply, battery adapter kit, 2 AA batteries, zipper bag, and user guide