Market Research in High End Market

Does anyone know of any market research that has been done specifically in the high end industry? Most companies are private, so finding specific information is difficult.
What information are you looking for? The magazines have done a lot of reader polls, but if you are looking for "industrial numbers" like total purchases, inventory levels and turns, good luck- I doubt that you will get any meaningfull numbers.
What kind of research are you looking for? Now you've got me curious as well. Let me know what you find if you wouldn't mind. Thanks!
I do market research for a living. I doubt that anyone save perhaps Sony has done any research on the high end beyond warranty response cards and casual inquiry of the dealer channel.

I'd give anything to run a focus group with audiophiles!