How about the Niles DBI-2>small amp of your choice>Niles SPK-1(speaker level switcher)?
Use the 12V trigger out of the DBI-2 to activate the speaker switch over....
Jack Rainey - Full disclosure...reformed integrator, now mid-Atlantic manufacturers rep for: Integra, Paradigm, Anthem, Parasound, Atlona, LG TV's and Metra Home Theater...among others
