I just bought the new Sonos Amp and I love it. It makes my Mangepan MMGi's sound much better than my previous receiver. I have a pretty decent Yamaha subwoofer connected to the sub out on the Amp.
I've noticed that when I turn on the sub output from the Sonos app the two stereo channels get noticeably brighter. My Maggies are already quite bright so the added treble boost is pretty unwelcome. But without the sub output my subwoofer receives no signal. I can use the primitive treble/bass eq in the app but that is not ideal and doesn't produce adequate results.
Is there a way to enable subwoofer output without changing the eq of the stereo channels?