I have a Sony CDX-MP70. Great unit 52x4 amp built-in, plays mp3 cd (i have 25 w/ approx 100-125 songs on each), changer controls (will control a 10-disc mp3 changer) & credit-card sized remote included. around $300 shipped from ebay (where i bought mine)

http://search.ebay.com/search/search...=sony+cdx-mp70