This Sony 300-disc CD changer lets you conveniently store all your favorite CDs in one place. It provides internal storage for up to 300 discs, as well as the option of including a second CD changer for expandability. Select discs and tracks with simple twin jog dials, or scan them either by slot position or by alphabet. To make your life easier, the Sony 300-disc changer also allows you to type in disc titles with a PC keyboard, and has a custom Group file to organize your CDs into eight groups. Other features include a motorized access door, a hybrid pulse D/A converter, an optical digital readout and a timer switch.