great review!! ive had similar impressions of both, when i had hd 650, both pairs and others i've heard, ive noticed that they're not as warm and colored as some people say they are, seems to vary alot on amping. but the hd 600 and 650 are certainly very close in sound. i still find the hd 650 to be more colored and darker but its not a huge difference.
11/4/14 at 11:33am