ASUS Xonar D2 Sound Card and U1 USB Audio Station Reviews @ PC Per
 

*Source: PC Per (http://www.pcper.com/article.php?type=expert&aid=505)*
___________
One of the most overlooked and underappreciated aspects of modern PCs are their ability to output high-quality sound. Most of today's mid-range and high-end motherboards come with decent 7- or 8-channel audio controllers on board, but they still skimp on many advanced features that PC enthusiasts, gamers, and audio professionals use in their daily activities like gaming and video editing.

More...