Tube is a totally other story that's have nothing todo about the quality from the amplifier. A stereo amp with a home theater pass through is a normal stereo amp.
You only use the end amp a receiver is a weak point for stereo i try a lot that's why i put a stereo amp into the system. And talking about 35000 dollar amp, mine last set was only120.000dollar amps, 4x cello performance the suite the jadis cd player and the magnepan mg20.

