This professional, rack mount CD player Features an adjustable pitch control function. This allows the playback speed to be altered. Speed can be altered up or down in 10 steps. A wide variety of sources may be used including standard CD, MP3 CD, USB memory stick, SD/MMC flash card. A full function remote control is included. Particularly useful in aerobics or dance classes, function centres, clubs & entertainment venues etc. Note: This unit features an important upgrade over previous models. Playback can now be set to 'non stop' ie: no gaps between tracks. This is designed for dance/aerobics class requirements.