Numark Mixtrack Pro 3 | USB DJ Controller with Trigger Pads & Serato DJ Lite Download (Includes Built-In Sound Card) ONE PLUG: DJ Controller powered by USB connection to computer for home and aspiring DJs BUILT-IN SOUND CARD: Connects directly to headphones, microphones, and speakers. SERATO DJ LITE: Software download included after free controller registration BEAT MATCHING: Long, 100mm pitch sliders to keep beats in perfect sync PRO FEATURES: Touch-sensitive metal jog wheels, multi-function touchstrip, 16 backlit, rubber trigger pads, volume levels display