AlphaTheta DDJ-GRV6 4-Channel DJ Controller for Rekordbox and Serato DJ ProRemix drum parts and perform remixes on the fly with the AlphaTheta DDJ GRV6, a 4 channel DJ performance controller for rekordbox and Serato DJ Pro with Groove Circuit technology. The controller is bus powered and unlocks both rekordbox DJ and Serato DJ Pro software without the need for a subscription. The format of the controller borrows heavily from the flagship DJM and CDJ line of equipment. Groove Circuit enables you to replace the drum parts of a