Make your CD listening a little easier, and make it last a little longer This 5-CD Changer is loaded with convenience features. All of them are combined to make it easier to load/listen to the CDs you want.8x Oversampling Digital Filter circuit combines excellent phase linearity with superb suppression of aliasing noise. Hybrid Pulse D/A Converter is an advanced Compact Disc design that places the Digital-to-Analog Converter and digital filter on single integrated circuit. Digital Servo Control system maintains stable tracking, laser focus and disc rotation - all with higher precision and lower radiated noise. Play Exchange is a feature in 5-CD Changers, this lets you change four CDs, even while a fifth one plays. Time & Program Edit fits CD selections to a specified amount of time, makes recording from CD a snap. Custom File Memory (305 Discs) uses the unique ID number pressed into each CD title's subcode area. Custom File players can remember and display a name for each CD, along with specific instructions on how you prefer to play it. Disc Memo Display is the Custom File feature that helps you remember which discs you have loaded. Disc Memo display lets you assign an alphanumeric name for up to 600 discs. Names are shown on the front panel - and on the LCD of Sony's 2-way remote control.