I recently entered a competition in my local hifi store and as luck would have it, won the HD 800 S.
I previously had the original HD800 as my reference set, so i was very eager to try the new one. Now as great as the 800 is, in all honesty i felt the spike in the treble killed it for me. I could hear how finely textured the treble was, but it never sounded right to me. It ended up being distracting and causing fatigue.
Enter the S. Good lord. I literally can´t stop smiling. This thing is absolutely fantastic. It takes everything that made the hd800 world class and fixes the problems i had.
BASS
I felt the original lacked somewhat in slam. The quality of the bass was fantastic, but kick drums in particular sounded a bit dull. Now the S has been beefed up in that area. Kick drums sound fabulous now. The bass actually reminds a bit of Beyer T1, which i liked very much (the treble was unbearable to me and ruins otherwise a good headphone). The quality of the bass has remained pretty much the same.
MIDRANGE
As you would expect, it´s highly detailed and resolving. I actually think the HD800 S mids are more resolving than the older silver brother. I might be alone in this, but that´s what i hear. Honest truth!
TREBLE
Now i had troubles with the original 800s treble, as i mentioned before. How would the S fair. I have to raise my hat to the folks at Sennheiser. They have done the unimaginable and made the spike disappear, leaving all the finely textured detail there. The treble is what first caught my eyes (or ears). It´s absolutely spot on! No more annoying peaks, just pure detail. I feel the treble is really the star of the show here. Well done Sennheiser!
SOUNDSTAGE / IMAGING
Pretty much the same as before, which is to say bloody fantastic!
This is my take on the HD800 S. I have been using for the last few years Lehmann BCL as an amp, and Hegel HD12 as a dac. Flac files mostly. Music styles included are rock, metal, indie, classical, pop and some folk music.
Lastly.