Allen & Heath Xone:K1 Professional USB DJ MIDI Controller Compact, slim line DJ MIDI controller that lets you customize your workflow and mixing experience 52 assignable controls for mapping to Traktor Pro, Ableton, Virtual DJ, MixVibes and more Powered via USB, so there's no need for a separate power cable Can be daisy-chained with other :K1s and Xone: K2s over X:LINK Lightweight and durable