As far as laptops go, lately it's gotten as close as it would get to desktop performance in all but one area: Sound. For a while now, I've been looking around for a decent USB audio solution for my mobile computer -- and most of them are either impractical, provides virtually no improvement over my Dell Inspiron's integrated audio, or the features offered are simply not enough to make a difference. Last year, my friend lent me his Creative X-Mod USB sound device for my enjoyment -- while it has great looks and builds upon the X-Fi brand, the performance was more or less disappointing for me. After Asus' successful release of the Asus Xonar D2 sound card, Asus made quite a smart move and decided to expand on this brand to the USB sound device market. How will this sweet looking Asus Xonar U1, combined with a complete set of home theater audio technologies and features such as optical digital out, perform altogether? Is it the sound solution for notebook PC owners? We'll put it through our tests today to see how it goes.