This 2-channel professional DJ mixer is simple but powerful. It takes two stereo RCA inputs, phono or line level. A ground screw is provided for the phono. Each channel has rotary EQ high/low and gain controls for total control of your sound. There's a mic input with volume control. The crossfader lets you move between channels for the ultimate mix. Outputs include a master RCA and a 1/4" headphone jack. Runs on 115/230 V.