If it were me, I think I'd rather use the receiver's solid state amp for home theater, and stick to the tube amp for my 2 channel listening. I don't know if there are switch boxes out there to allow for the connection of 2 amps to 1 pair of speakers, but if not, one can be built easily with a couple relays, and if you choose a receiver with a 12 volt trigger, this would be very easy to implement.