The NAD S300 (and the entire Silver series) has been discontinued. They now have the Masters series. There is an integrated amp in the line that looks like it might be ok. it has some semi-useless features like dual zone but also has some useful ones. The "tilt" tone control feature has been used by other manufacturers and it can be useful.
http://www.nadelectronics.com/mastersseries/M3_framset.htm
http://www.nadelectronics.com/mastersseries/M3_framset.htm