The DN SC2000 Controller unit is an affordable, compact, professional grade, solid steel MIDI controller designed for the home DJ or party laptop DJ on the go; Used together with the DJ"s favorite mixer and piece software of choice, the DN SC2000 offers party and bedroom DJs a compact, portable, user friendly control solution; A two layer system, the unit can control two decks at once (with visible deck color change), or be paired with another DN SC2000 unit to control four decks; The DN SC2000 includes many advanced functions, including MIDI mapable capability, jog wheel, auto loop function, a wide range of effects, rugged pitch slider, pitch lock, automatic beat sync, durable rubber button controls and much more