\rHi Gus:
No problem driving the one pair of BOSE. As long as your second pair of speakers is 8-ohms there should be no problem. We are compatible with Spotify, Napster, Tidal , Tune-In and iHeart Internet Radio stations. I understand if you have Apple Play (1) you can access Pandora and others. But are OSD Player app supports the five I listed above. You can use Bluetooth to connect to Pandora as well as others.
TimL/6-3-2020