The PSM300 Stereo Personal Monitor System delivers detailed 24-bit digital audio and reliable wireless freedom to every corner of the stage. Patented Audio Reference Commanding ensures the clearest sound, with ultra-low noise and no artifacts. Dependable wireless coverage extends over 300 ft. (90 m) of range and eliminates dropouts. Easy to setup and operate, PSM300 systems offer one-touch frequency scan and sync to find and assign a clean wireless channel. Adjust the volume and use Mix Mode technology or stereo mode to create a personal mix from two channels of audio. P3TR112GR systems include SE112 Sound Isolating Earphones for great sound with deep bass and up to 37 dB of ambient noise reduction.