What speakers? I can tell you that the Sonos amp sounds pretty good and way better than the Connect Amp which was a bit mushy sounding in comparison.
If the speakers are reasonably efficient you're good if they're power hungry you might want to go with a Port and a separate integrated amp.
For example I heard the Sonos amp to a pair of Totems (tribe towers maybe?) and it didn't sound good at all but your middle of the road KEF, Monitor Audio etc around 90db efficiency it'll drive quite well and it really sounds quite good especially considering everything it does.
If the speakers are reasonably efficient you're good if they're power hungry you might want to go with a Port and a separate integrated amp.
For example I heard the Sonos amp to a pair of Totems (tribe towers maybe?) and it didn't sound good at all but your middle of the road KEF, Monitor Audio etc around 90db efficiency it'll drive quite well and it really sounds quite good especially considering everything it does.