I just bought a backup assembly for my Sony. In case anyone is looking on Sony's site and having a hard time finding info for the part, this is one of the parts sellers Sony recommends.
http://www.andrewselectronics.com
It took me enough time to find the info that I figured it might help someone else in similar straits. They have them in stock and are selling them for $45+shipping. I'm very much enjoying the Sony, BTW. It was a great deal for a very nice sounding unit.
