This is a full-featured DJ and beat-mixing system to rock your parties with four independent decks and professional sound quality, as well as beat-sync display, pitch control and fast-seek mode. Special Features: Work with four independent decks and pitch control on audio files. Special effects such as Fade, Pitch Fade, and Brake Fade will shake your party more than before. It's suitable for veterans with just several buttons and few clicks to rock parties. Also beside a user-friendly interface.