Built-in USB/SD(TM) Card readers ; FM tuner with EQ/volume control ; Media mode selector ; 4ohm /8ohm ; 70V/100V speaker outputs ; Tuner down/up/scan button functions ; Power on/off with red LED indicator ; Master volume rotary control ; High/mid/low tone level controls ; Front 3.5mm aux in ; Microphone 1 talk-over feature ; Phono/aux volume input control ; Microphone 1/microphone 2 volume controls; Microphone 1/microphone 2/aux inputs ; RCA input ; 110V/220V voltage selector ; Removable AC power cord ; Unswitched AC power outlet for optional equipment ; Built-in retractable antenna for FM tuner ; Dim: 12.6″H x 7.48″W x 3.15″D;