All-In-One karaoke machines have a built-in karaoke player, amplifier and speaker(s) all in one unit. Some karaoke machines even include the TV. That's truly all-in-one! They are usually very portable and need only a connecting wire to your TV or other video source. If you need to play karaoke, and you don't have an existing sound system or want to be able to easily move your karaoke system, then an all-in-one karaoke machine is your solution!