I used this product for a while now and I have to say that I am really impressed. I use it as a sound card for my laptop and the quality of the sound is, due to the lack of another word, perfect. Another piece of advice, buy good quality output/input cables for it. You will ruin the perfect sound coming out of it if you use a cheap cable. M-Audio did a really good job on this one.
Sadly, it broke down a couple of months later, not sure why...disappointed it lasted this short but I really enjoyed using it.