The CD-RW900SX is for professional CD recording and playback applications. As a CD recorder, this includes final mastering, dubbing from any external source, archiving audio and more. As a CD player, applications include music and dialog playback for industrial facilities, retail and business applications, house of worship, retail environments and more. The CD drive is built to withstand constant use and is high in durability and reliability. Other features include rich playback functions that enable the device to be used as professional-level CD player.