We love this karaoke machine. It's a high quality guitar amp with a karaoke machine built into it.
The only problem, as per the negative comments posted here is that when you first set it up, it seems you can't set the microphone volume (the vocals) loud enough. The mic input volume control maxes out and it still isn't loud enough. If you crank up the volume using the the master volume control on the side, then the background music is too loud. This would be a fatal problem IF it there weren't a way to fix it.
They key to this problem is to understand that the background music is controlled separately by the REMOTE CONTROL. There is no hardware knob for that. You need to turn DOWN the volume of music playing off the CD by using the volume controls on the remote. This lowers the background sound relative to the other inputs, including the microphone input. Once the CD volume is lower, you won't have a problem getting everything balance the way you want it. But you have to know to use the remote control to adjust the CD output volume. Once you have everything balance the way you like, you only need to adjust the master volume on the side to get it loud our soft overall. No more twiddling of the levels.
Very happy with this purchase. Enjoy!