The Numark M1USB 2-Channel DJ Mixer is an ideal choice for any DJ looking for a cost effective DJ mixer, that wont take up much space. The M1 features 2 turntable inputs and 2 line inputs for CDs, MP3 players, etc. An on-board USB connection serves as a direct interface to Mac and PC computers. Digitize and playback audio using your favorite recording software. The crossfader is replaceable and a crossfader headphone cue means quick monitoring. Each channel features a treble and bass control and trim (gain) controls for adjusting input level.