Entertech Ed-8000 Magicsing Karaoke Microphone 8 USB Plus Edition 2000 Songs!! 2000 English Songs Built-in the Microphone Memory 4 Expansion Slots Available. 100% backward compatible with all previous generation of Magic Microphone chips 8 minutes of built-in memory to record your singing. Improved Sound Quality The new microphone enables you to have video input from any standard RCA video source Adjustable song key, tempo, echo, music volume and mic volume