You may find a good deal hear on Cambridge Audio, they are closing out there 540 and 640 series for the 550 and 650 series. The only difference is the new models give you an iPod input on the front panel, and they updated the volume and tone control pots again. You can save $300 by buying the closeout model.

http://www.spearitsound.com/Cambridg...dio_540av2.asp