The Technical Pro DPU55 Professional Double USB/SD Player is a dual deck digital audio player for mixing audio files from USB storage devices, and SD cards. The DPU55 enables DJs to access and mix up to 32GB of MP3 files from pocket-sized storage media. The DPU55 features 2 decks, each with a large jog-shuttle wheel, transport controls and back-lit LCD displays. Each deck features a pitch control slider and the pitch range varies between +/- 16%. Additional features include looping, repeat, reverse and a built-in brake effect. The DPU55 conveniently installs into any 19" rack enclosure.