I have a pc midrange mounted by me. The motherboard chip although correct, is typical low end; and this will mean. Sound okay for a pair of computer speakers, but very limited on a good grater (or home cinema). Brief finding her flat, lacking fishing and being downright catastrophic listening to a film (loud music and dialogues low). I wanted to put a good PCI sound card, but NOT THE PLACE !! the graphics card is too big. I followed the advice from amazon and I tried the USB key. Convinced that it would be hardly better. Well no !! the power to at least doubled; the bass is clean and powerful and of course the channels are managed much better! I am RA-VI and surprised. EDIT: finally tested with an optical cable. The sound is even better, finer and detailed. We are here in front of a product entry, but will boost méchament laptop computers or entry. To feel the difference it must paste it on anything other than simple computer speakers;)