B-Stock, Native Instruments Traktor Kontrol S4 MKII, DJ Audio Interface and Controller - highly integrated 4-deck Traktor controller and flagship software, plug & play - all you need to start mixing is your computer and mp3s. 4-channel mixer with ergonomic layout, 2 high-res jog wheels, 2 analog inputs with phono and mic preamps for hooking up turntables, CD players or external audio gear. Traktor Pro 2 Full Version - software: pro features, supreme usability; features 4-deck mixing and effects, plus all-new Sample Decks and a powerful Loop Recorder, 2 customizable FX units with 28 performance effects for adding your own trademark sound, powerful mp3 management with iTunes integration and iPod compatibility. Integrated 24bit/96kHz soundcard with pristine, award-winning audio quality. All components designed by the same team - precision German engineering. Plug & Play-Support: direct Control of TRAKTOR DJ for iPad and iPhone, Flux Mode-Switch and Booth-Output, USB 2.0 bus powered, incl. iOS 30-Pin-Kabel (30-pin to Apple Lighting Adapter optional), incl. Traktor Pro 2, Software and drivers are available at Native Instruments website (no installer media in the box). optional Case: #263670, optional Cover: #262947, B-Stock with full warranty, may have slight traces of use