The Hisonic MA-222 Karaoke mixer/amplifier can turn any DVD, CD+G Player or game console into a karaoke machine or a vocal mixer. What's unique about this machine is itsPlayer mode switch. When you toggle on theplayer mode, the MA222 becomes a 60 watts amplifier. You can use its internal amplifier to power any speakers you have around the house. When you toggle off on theplayer mode, this unit becomes a karaoke/vocal mixer. If you already have an existing home theater system, this unit can be connected between your DVD player and the home theater system and instantly turning your system into a karaoke machine. Size: 17 x 2.4 x 13.4 in.