Are Their any Tube Preamp with Home Theater Bypass?

Not a fan of Primaluna but I think they have an HT bypass.

My tube integrated has 2 inputs.

I use my DAC as a preamp so I turn up the volume to max on my integrated.  With the volume turned up to max, each input is the equivalent to an HT bypass (HT bypass bypasses the preamp).  

So my DAC goes into one input and my HT goes into the other.  Works great.

Jerry

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

To name a few,

ARC REF 6SE & LS28SE

Modwright LS300 & LS 36.5 Tube Linestage

Backert Labs Rhythm & Rhumba

IME, you’re better off keeping 2-ch and home theater separate. Can it work, sure but the end results can be very mid-fi on either side. If you’re striving for ultimate performance in both arenas, keep them apart. Been there, done that with ARC / Modwright on 2 ch and Classe Delta Series / Krell Evolution Processor and Amps on HT - 7.2 driving all B&W 800D2/HTM/804D/SCMS/JL Audio f212v2. 

Conrad Johnson.   And no , not any preamp will work if you want it to sound half way decent.   The proper HT bypass eliminates the volume , the input is unity gain

The receiver or HT pre pro is the master volume when watching video. 

I agree about keeping them separate but that’s not always practical or possible