1.Build-in professional karaoke mixer let you can plug N' sing directly; 2.Supports up to 2TB hard drive and touch screen. Features:1.Supports dual screen (TV+VGA),mouse and touch screen;2.Can play over 30,000 MTV vocal songs of different languages; 3.Supports up to 2TB SATA 3.5" standard hard drive;4.Easilly add up new songs thru SD or high speed USB cable to pc;5.Supports VOB,DAT,AVI,DIVX,MP4, ...