I received a pair of HD650's last week and have been almost unable to stop enjoying them since they arrived. They are my first set of decent over the ear headphones. They seem to have great synergy with my Nuforce HDP (dac/hp amp). I'm very pleased with the combination.
At first the clamping was a little bothersome but I bent the metal part of the band a bit more open in the recommended manner and they are much more comfortable now. Looking forward to enjoying these 650's for (hopefully) many years to come.
Wow, well they sure are a good first pair of full sized headphones! I've been enjoying mine than ever recently I think. . . I've had them for almost a year now and I still can't get over how amazing the mids are. . .