Having a Crossfire, I have no space on my motherboard to put her in a PCI-e card and have therefore acquired the external sound card (which will also be more convenient in the long term for the short it does not let me in 1 year, but I doubt).
The product exudes quality although it can get a little afraid to take off the cap (as usual ': it is useless to force) and even a little less compact than what I thought, which is reassuring: it does not heat unlike some new models "compact" a brand I will not mention, who are so they suffocate in.
The sound that comes out is very very good, as you say, I was already my ATH M30 before, as you say that now, I do not see the point of paying more than 60 in a helmet.
Concerning the box, everything you need in it: a manual that takes us for a fool who can not insert a DVD and click next and connect two cables (personal 'I even had 2 probably an error from ASUS but nothing, it made me giggle more than anything else), a driver CD (so no risk foisted link could end up dead time), an adapter me useless and sound card. The leaflet, though useless, is translated into several languages, including English and French. However the driver has some non-translated English words, but nothing major, we find it.
Speaking of drivers, they are not top top, and I still have background noise on the microphone, although I think that this sound card is not the only one responsible. However (and this is all his fault), I can not go very high in Hz with my micro ', which really sucks (to say clearly things as they are). 48000 Hz, it seems a bit wobbly, but hey, let's say for VoIP that will be enough. No functionality planned for the microphone, besides (no Noice canceling or others), also disappointing.
But on the level of the headphone jack, it is very good and knows the sound card to deliver more than 64 Ohms (Me ', my helmet is 65 and it feels good to feel when listening to music) .
Coming from ASUS is still disappointing to have such a lousy driver. But hey, it's still very good overall, except for the microphone jack that is downright worse than that in the front of my case.