The Alesis M1 Active 330 USB speakers are not only substantial audio monitors, but also serve as a convenient audio interface. The M1 Active 330 USB speakers enable you to play audio from your computer, as well as record audio coming into the speaker to your computer. Line-level turntables, keyboards, guitar effects, DJ mixers, or standard CD and tape players can all easily connect directly to the M1 Active 330 USB speakers. Simply plug in the USB cable to your computer – No special drivers required.