Pioneer DJ DDJ-RZ Flagship Professional 4-channel Controller for rekordbox dj The controllers layout mirrors the softwares GUI, giving you instinctive control of performance features including Hot Cues, Sampler, Slicer, Sound Color FX, Beat FX, Beat Jump and Pad FX Bundled with a rekordbox dj license key, simply activate your license key for our DJ software, connect the controller and start DJing Included, is a free license key for rekordbox dvs bundled with this controller for highly responsive scratch control with music from your rekordbox library Hit the 16 back-lit rubber performance Pads to trigger quantized Hot Cues, Slicer and Sampler, or use the new Pad FX to create multiple FX chains Use the new oscillator sampler to overlay four pre-set sounds - Noise, Sine, Siren and Horn  and modulate the output using the dial. The sampler also gives you the freedom to trigger and manipulate your own samples loaded to the banks in rekordbox dj