[pr0xZen]

Thanks, that seem exactly what i need, in this way i can save money instead of buying a new av receiver.
I looked for that usb soundcard in Europe, because here in Italy shipping from China have ofter delay and problem with customs. I found a lot of seller on ebay that have similar products (from the photos seem to be the same), but there's no brand or model on description.
This is one example:
http://www.ebay.co.uk/itm/USB-2-0-Extern...1393675352

Do you think it's the same?

Exactly - same here; Bought the USB soundcard, keep my older NAD receiver. Save for the right deal in used hifi marked.
It looks the same, most specs provided there are the same - beyond that, its anyones guess. It has no branding, and it doesn't say what DAC or controller is in it. It is likely to be the same - but I wouldn't be willing to put money on it. I'm not much of a gambling man.