Don't mean to dig up an old thread but i think this is the newest on this subject that I am looking for. I am on the fence with these two, (and the mad dog t50rps). I would normally just pull the trigger on the he400, but I have a major concern about comfort. I wear headphones for hours at a time and I am finding that comfort is right up there with sound quality. I am thinking that the comfort of the senns is higher than the he400 from all i read, im wondering how much sound I am giving up by choosing one over the other? I wonder if i would even know what I am missing, probably the nicest cans I have heard to date are the denon d2k's which are nice, but I find them a bit heavy, and can afford to get something a bit better.
I use my hp's mainly for League of Legends while i am gaming and music listening in the background. When I do listen to music, it is primarily from online sources and most of the stuff i listen to is not available in lossless formats, (it is usually EDM mixes). I love a cinematic experience while gaming, and I know the he400 has superior bass, but can the senn's deliver punch and impact? I am reading they can, but wont have much rumble. I have the hd25s and love the sound but comfort is terrible. I am running all this through a schiit magni + modi stack. Tried to read all I could, but maybe i can get a bit more clarification from those who have owned both. Thanks!
Senns are really quite comfortable due to their light weight and relative ergonometry out of the box. However IMO HE400 (and all Hifiman cans by extension) are easily modifiable/malleable to increase the comfort level to very high levels.
Things to do:
- flex the headband (it's just a spring steel core wrapped in leather and foam) to reduce clamp to your liking
- use a cheap headband wrap cushion ($12 or something on ebay) to better cushion the head, more even weight distribution
- use Hifiman's official velour pads / pleather pads with / without foam spacers based on personal comfort preferences
If you do all three, the comfort level skyrockets. The only thing that is always a factor though is the weight. If you have a weak neck / problematic upper body spine issues then I wouldn't suggest any large planar magnetic headphones due to their heavier masses. If you are relatively fit / built then it's absolutely no issue.