Amazon.com: Numark Mixtrack Pro FX – 2 Deck DJ Controller For Serato DJ with DJ Mixer, Built-in Audio Interface, Capacitive Touch Jog Wheels and FX ,numark mixtrack pro dj controller,Numark Mixtrack Pro - Serato DJ Hardware,Amazon.com: Numark Mixtrack Pro II USB DJ Controller with Integrated Audio Interface and Trigger Pads : Musical Instruments