It's a receiver, so on it's own... it does not "hold" any CDs. You can connect multiple CD players, jukeboxes, etc. I have a single disc CD player, 6x 300 disc CD changers, and 2x 200 disc CD changers connected (using a few input switches in between). I've also got a Hi-Res Sony audio player, an Onkyo Hi-MD, a U-Turn turntable, and a JVC dual cassette deck attached. This receiver is amazing for audio-centric use.