On Roon you can chance output device almost instantaneously and set volume on each device differently. I might be going totally “hifi” deaf, but there’s no big difference in sound except soundstage, where the KEF’s has an obvious wider soundstage. But overall there next to no audible difference. Not even the bass. Actually I just wanted to switch back to the Sonos, to listen how the much more expensive KEF’s would cope with bass, but I was already listening to the Sonos! I was not expecting this.
Thanks