I have heard The HE-1000 and they are great for headphones. They are not a replacement for speakers.
HiFiMan HE-1000 Headphones vs Reference Speakers ?
One reviewer that listened to these headphones thought they sounded much more like his reference system! Sounded very un-headphone like!!...
Could this be a short-cut to Audio Nirvana!..
http://www.hometheaterhifi.com/headphones-and-earphones/headphones-and-earphones-reviews/hifiman-he1000-planar-magnetic-headphone-review/all-pages.html
Could this be a short-cut to Audio Nirvana!..
http://www.hometheaterhifi.com/headphones-and-earphones/headphones-and-earphones-reviews/hifiman-he1000-planar-magnetic-headphone-review/all-pages.html