You can't drive more then two sets of speakers off this (assuming speakers are 8 ohm). If you want to drive a lot of speakers, you either get Sonos Amp per set of speakers (or room) and run them as group (giving you same music, same time in all rooms), or get the Sonos Connect, and a amplifier that can drive a lot of speakers all at once. The only issue with Sonos Connect driving a lot of speakers at once is, the volume control won't work the best in the Sonos app. It'll change volume of all the speakers at once. If you have a Sonos connect or amp set up per room, you'll find volume control is easier.