Rack mount professional Music players with built-in CD and FM tuner, SD card and USB reader. These professional players can be used 24 hours a day 7 days a week. They are carefully assembled with high quality components. Radio tuner with 10 radio station presets, CD text support. IR Remote control is included in delivery with each player. Different devices have a different music sources on board and different output configurations. They also have different output connectors. Easy to choose the right device for specific application.