HotHardware.com posted a review on the ASUS Xonar D2 Ultra Fidelity 7.1 PCI Sound Card
A quote from the article:
ASUS Xonar D2 Ultra Fidelity 7.1 PCI Sound Card Review
Asus makes bold claims about their new Xonar sound card being the
"best" PC audio card on the market currently. We took the product to task in an effort to prove out these claims. At the very least perhaps a company,
with the Hardware and Software Engineering resources that Asus has, can
deliver reasonable audio fidelity and hopefully a better set of drivers than the likes of Creative's X-Fi debacle.
ASUS Xonar D2 Ultra Fidelity 7.1 PCI Sound Card Review