So it can play back music, a fixed audio installation needs a professional media player. Media players offer various playback options - like CD, USB, Bluetooth and radio - and often feature a standard 19" format so they can be easily installed in a 19" rack along with other audio gear such as amplifiers.
19-inch Professional Media Players for CDs, USB and More
A pro audio player is practically indispensable for conference halls, class rooms, pubs and restaurants since it's what you need to play back media from CDs, USB sticks and SD cards. Some models are even equipped with a built-in radio tuner, iPod dock, cassette deck, Bluetooth, mini-jack AUX input or a network port. In most cases, this type of media player can be safely and easily installed in a 19-inch rack.
Double CD Players With DJ Functions
Some professional media players are aimed at DJs and feature functions like pitch control, dual CD trays and a jog wheel, making them ideal for pub owners who want the option to hire a DJ every now and then. Most double CD players have a two-way design, featuring a dual CD tray unit for loading in CDs plus a separate control unit that can be set up elsewhere as needed.