Pioneer's PD-F407 25-Disc CD File Compact Disc Player is a non-stop music machine. It features a 25-disc playback capability with Rolling Rack System for fast efficient music selections. You also get all sorts of nifty features other players wish they had. Like previous disc scan to find that song you wanted on the last disc. Or best selection memory to pick and choose the songs you want to hear over and over. Three custom mode functions add versatility. Convenience features include: 3 Custom Mode Groupings; 15 track Best Selection Memory; 15 Disc Previous Disc Scan; 32 Track / Disc Programmed Play; Programmed Hi Lite Scan; Memory Hold; Last Disc Memory; Programmed Total Time Display; Full Random Play; Pioneer SR in / out for system integration.