I have been without a working soundcard for a while now and have just recently invested in a replacement in the form of the hyperx cloud II headset. I have to say that the sound in Eis awesome, and made that much more awesome by my mid range / moderately expensive headphones. One aspect of the oculus that simply makes me groan out loud is those stuck on open headphones. I mean, I would rather choose my audio solution than have it bolted on.
I wish people would read the spec before commenting... THE INTEGRATED HEARPHONES CAN BE TAKEN OUT. You can use your own. But if a game is made for the Rift from the start I would advise against it since the Dev will probably have used the audio sdk of the rift