I have my laptop and my Hifi Reciever interconnected via digital input and output and it worked very well. If you also infects the analog connections with, there is, unfortunately, to unsightly distortion, for whatever reason. Unfortunately, the digital output does not output 5.1 channels, but only stereo. If you want to use the card for home theater, this is only possible via the analog outputs!
The sound is good, but does not reach high-end level (but that can be for such a low price does not necessarily expect).
From also good quality is the headphone output, it also comes with high-impedance Hifikopfhörern very clear (eg from AKG) and brings into being as well as a decent volume.
The microphone inputs I have not tested this since I do not need them.
At the processing there is nothing to complain about, which is OK
Conclusion: Overall, a recommended USB soundcard with strengths and weaknesses in the small sound and the output via the digital output.
