Very good, I like that you can simultaneously connect 2 sources, so I run 2 computers with a pair of boxing. I can not say much, I have not used it over the microphone input.
Even on holiday the speakers have given a very good impression, operated on an iPod I could sonicate the apartment well.
I would buy the MS16 at any time - at a price that is significantly below the other (less good sounding in my opinion) pairs of speakers for PCs.
Therefore 5 stars.