Hi All,
The demo HD800 that Sennheiser USA was so kind to lend me for a few days has arrived and I am listening to it! WOW!!!
And of course my 307A and Luxman P1 are not here

The P1 is on my loaner program and the 307A is off for a review. BUT I do have my new FET-A amp and the HD800 sounds glorious with it. I have it hooked up to a Meridian G08.2 with Cardas Golden Reference cables. To be honest it sounds better than anything I have heard. The HD800 is worth the dough and worth the wait.
I will post impressions on Monday when I have spent a significant amount of time with them.
Todd