Tweaknews posted a review on the Asus Xonar Essence STX Sound Card
A quote from the article:
>> Asus Xonar Essence STX Sound Card Review
Asus' Xonar Essence STX may be pricey, but for audiophiles or those with the money to spend on an excellent sound card, this is the one to get. It looks good and performs even better. It's made with high quality components throughout, right down to the capacitors and EMI shield and this attention to detail becomes evident right from the first listen.
>> Asus Xonar Essence STX Sound Card Review