Check the listing for details. Gemini MDJ-900 Professional USB DJ Media Player LN. Condition: Used. Listed at 351.96 USD. The MDJ-900 is aimed at the demanding professional DJ, boasting a large 8 in. touch-sensitive jog wheel and packed with tons of high-end features. This cutting-edge digital media player is all about ease-of-use, letting you mix effortlessly without the need for external software.Link mode lets you connect up to four separate players via Ethernet and share music from the same USB stick. Aside from making it easier to share your music library, link mode opens up a whole new world of possibilities. With multiple decks connected, enabling sync mode matches the tempos on each MDJ-900, freeing you up to experiment and create more complex mixes on the fly.At the focal point of the MDJ-900 is a large, 4.3 in. color screen that provides realtime visual feedback of your tracks.