... on the front panel; auto play the MP3 files in USB' can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone e ... USB slot on the front panel;auto play the MP3 files in USBwith class D Amplifier 5Wx2 ch THD 10 ... %3.5mm Aux in , can connect with PC ,Mobile Phone , MP3 player,and iPod ,iPhone etcplay/pause,next,prev,vol-,vol ...