This karaoke machine has crisp sound even at higher volumes with a max output of 250 watts. It can be hooked up to any ipod or mp3 player and comes on casters for easy mobility. This karaoke machine is great for larger or outdoor parties. It comes with two microphones and all the hook-ups needed for connecting to a tv (tv not included). It also includes your choice of 5 full cd’s or 10 half cd’s. This item requires a standard 110v power supply.