Can someone confirm that the Sonos Port (which requires a 3rd party amplifier) is NOT compatible with a Sonos Sub? I believe the reason for this is that the Sub must pair directly to a Sonos component that has built in amplification (Amp, Sonos speakers). A Sonos port cannot plug directly into a third party amplifier.
I realize there are hacks around this (pair the Sub with a Sonos speaker then group the speaker/Sub with the Port, eg.) but I do not want to do this.
If any of this is factually wrong, please educate me.