QUOTE(genyou90 @ Jan 6 2013, 02:29 AM)
beside the comfortable issue, how about the sound ? impossible about the same, right ?
It'a not the same that is for sure. But it doesn't mean HD 681 sounds worse.
The HD669 has a very balance tone I would say. I can't hear anything significantly better than the other.
My Razer Carcharias for instance sounds like the bass is not tight and also over lapping the higher tones. I think the description I always use is muddled. But the HD 669 does not have that problem. Low and high tones are as it is.
The HD681 is however a bright headphone. Bright as in you can hear the guitars and cymbals very crisp. Works well with Counter Strike AK47 also if you do game on PC. But bass is also present like the HD669 except the higher tones is more obvious to the listener.
I listen to all of it from my Asus Xonar DG out of my PC without an external amp. I read somewhere that the HD669 do much better with an amp powering it. My Xonar does come with an internal headphone amp, but I would not think it can be as good as an external amp of branded quality.
Overall in terms of headphones I would rank my HD669 as my last listening preference. As I wear my headphones at least 2-3 hours per sitting and sometimes more, comfort takes a big priority. I can't concentrate on music or gaming or even a movie if my ears and head start to hurt because of the headphones.
A700>HD681>Carcharias>HD669