Summary: The HD 800 are highly regarded cans. I have listened to mine for hours and hours and never fatigue. They give me everything my speakers do. BUT, they are 300 imp, so be SURE to have a decent source. If you don't you will miss the bass and life of the headphones.
Conclusion: Lighter than many of its competitors at this price point, and with imaging and balanced frequency response that is difficult to best, the HD800 is an intersection of many fabulous qualities.
Conclusion: Quite honestly if you're looking at buying these headphones, you probably know exactly what you're getting into. I'm not going to go into great detail on them as there are reviews out there that do a much better job than I could ever do, but I'll just briefly state some of my thoughts on them.
John Shuy from Charlottesville, VA, Sonic Electronix
19 December 2014
Conclusion: I'm a previous owner of the Sennheiser HD700, and I finally decided to upgrade to the Sennheiser HD800 a few weeks ago. Even though purchasing these headphones might automatically lend you an 'audiophile' air, I do not consider myself as such, as I dislike the jargon used by some of them.
Excerpt: got this to upgrade from akg702. was blown away from the first minute. connected it to a wa7 fireflies and every music is a joy to the ears. huge soundstage and pretty natural. trebble did not annoy me as much as other people claim it to be. love these great cans
Excerpt: You need the right system for these headphone ,i am useing a naim cdx2 player and i have an atlas mavros rca cable going into a lehmann audio linear headphone amp, and i did not change the stock cable on the HD800 but if i do i will consider the cardus clear because these are more like speaker...
Summary: The Sennheiser HD 800 (Factory Refurbished) headphones that I purchased and received looked brand new. I was overwhelmed with joy when I saw the like new condition of the headphone. Processing and shipping was very fast.
Pros: Soundstage, depth, clarity, separation, openness, and realism.