A:
The play three is actually "stereo" all in one, but if you mean will it sort the tones left and right, no they won't do that. Only if you link to a sound bar for surround sound will the play 1's sort sounds. However, as I type this, I have 2 sound bars, one sub, two play 3's, and 4 play ones playing all through my home and it's amazing.... Sonos is pretty incredible, you can do so many things. I could part these speakers up on the iPad ap that I just listed now, and be able to have full surround on two tv's (playing different movies), plus listen to different music in my bedrooms, garage, and back yard all at the same time! Now, you do need a pretty good signal to get that crazy, but it totally works.
If you like music, dive in! Sonos ROCKS!