Two for stereo of course!
It does have two line inputs unlike my Compacts
2 inputs doesn't mean stereo?
I'm not exactly sure how that works. On my Space Station V.3 I seem to get a bigger sound by using both the left and right outs into the SSV.3. By bigger I mean bigger than a single out from my keyboard to a single in on the Bose Compact.
Guess I'm going to have to do a bit more research.