Are Their any Tube Preamp with Home Theater Bypass?

You dont need that feature any preamp will work:

in set up all you have to do is to match the levels of the fronts with the center and rears with a spl meter then note where the preamps volume control is set and your done

Dave and Trpy

Audio intellect NJ

Av dealer and installer

oddio the way we described works perfectly it just requires you to adjust the pramps volume which you must recall a piece of tape with an arrow works or if your preamp has a numerical display you just have to use that  number on the display

so in our scenario the op can look at any preamp and other the losing a few seconds to preset the volume he can purchase any tube pre he likes