Not counting the S1 vs S2 benefit, is the new equipment better from the perspective of musical qualities?
My main problem is that I use a single ZP100 as both an amp to drive a set of speakers in one room, and effectively as a ZonoPlayer by using the Audio Out connected as a source for my HiFi (turn off Hi-fi if not needed in that room or turn down Sonos Zone if not needed in the other). This does not seem possible with the new Amp (no audio output). So that aspect will need to be reconfigured.
It is the improvements in sound quality that currently interest me.
As always thanks in advance for any insights
EnEm