The AlphaTheta DDJ-GRV6 is a 4-channel DJ controller, compatible with both rekordbox and Serato DJ Pro. You can easily remix drum parts and perform remixes on the fly with the DDJ-GRV6, thanks to its Groove Circuit feature which enables you to manipulate the music in ways that are impossible with a conventional DJ controller. Simply press one of the dedicated buttons to swap the drum part of any track with a beat or break in a completely different genre while it's playing, then add effects if you want it to sound even more unique. When used with Serato DJ Pro, the DDJ-GRV6 can manipulate and separate Stems using the Stems FX feature.