Can I hook a Asus DG up to a FiiO E17 and have dolby surround sound with headphones?

[nightrider1470]

I have a cheap Asus DG card and I was about to upgrade to a Asus STX for better gaming quality with some better headphones I have bought.

Rather than upgrading my sound card couldnt I just buy a FiiO E17 and enjoy better sound quality + I will be able to make more uses out of it with other devices I have like my PS3 Blueray player

So my main question is

Asus DG + FiiO E17 or just buy a STX ?

 

[nightrider1470]

Hmmm.... So is it a safe bet getting it working with the E17? just ordered the wrong sound card by mistake (PCI instead of PCI-E) so could do without another messup! lol