State-of-the-art, professional 48kHz/24-bit digital conversion for exceptional audio clarity ; Transparent freq resp across entire audible range; Digital transmission virtually eliminates interference from nearby obstacles; Extended operating range up to 300ft line-of-sight; DW-22 dual receiver with volume control, XLR output, 1/4″ line output, power switch, LCD display & safety cable clip to prevent power cord from being accidentally pulled off; Includes AC adapter, 1/4″ audio cable & manual; 2 Digital LT(TM) LM-14/O lapel microphones;