Native Instruments Traktor Scratch A6, professional DJ system including Traktor Scratch Pro 2 Software, controls digital music files using turntables or CD decks (up to 2 decks simultaneously), compact USB2 DJ audio interface (24-bit/96kHz) with 6x switchable unbalanced line/phono inputs, 6x high gain outputs, headphone output (1/4" TRS) with volume control, low latency drivers (ASIO, Core Audio and Direct Sound), Status LEDs, DirectThru Mode, Note: non-returnable once software package is opened. Includes: Traktor Scratch Pro 2 Software, Traktor Audio 6 audio interface, NI POWER SUPPLY, 2 control vinyls & 2 control CDs, 4 x RCA cable, USB cable, Setup guide, pdf manual, Software and drivers are available at Native Instruments website (no installer media in the box)