There is not a separate power switch to shut off the power amp section on an integrated amp. The amp section will still be active when you use it!
Two integrated amplifiers, tube and solid-state connected to same speakers
I currently have an Anthem MRX720 with a MF M6500I that I use for home theater. I would like to get an integrated tube amp, possibly a Primaluna Dialogue HP for 2 channel listening. Would it be possible to integrate it with the rest of my system? I really don't want to use the power amp section of the primaluna for normal home theater listening and put the wear on the tubes.