CONDITION ** USED ** ** BAG FREE ** Portable 2-channel controller for Serato DJ. DDJ-SB2 boasts all popular features from DDJ-SB, and adds some amazing new functions. This controller has been upgraded with 4-deck control and dedicated buttons to switch between channels effortlessly, plus a trim knob and level meters to master the input volume, and Pad Trans beat effects will uplift your DJ skills.