Anthem is high quality gear, but maybe not exactly what I was suggesting.
In my system, I have a Marantz AV7704 for home theater. I have a five channel amp that powers the center and four surround speakers.
I also have monoblocks that drive my 2 main speakers and a separate preamp for two channel listening. For two channel listening, the home theater processor is not in use. The preamp has a home theater bypass function that sends the signal from the pre pro to the main speakers while using the monoblocks to power them for home theater use.
Hope that helps.