So you have a great hi end stereo preamp, but


you can’t funnel any sound from your ht system thru this magical box. Seems kinda sad. 
I can do a stereo signal in my avr from wherever, but this probably ain’t the same. 

emergingsoul
Google Home Theater Bypass.  It will allow you to bypass your crappy AVR and get better sound quality when watching movies, concerts, or whatever.
"Emerging" soul, where did you get stuck? May I recommend some synthetic oil or, better, taking a few more moments to compose your OP? Otherwise, it's just a time-suck.
Where this guy “Emerge” from? Really uninspired posts of late. Almost novice or troll like.🤔
Problem here is that you can’t achieve a high level of stereo SQ when stereo preamps and avr’s are in same system without a lot of addl operating costs and inconvenience.  These two worlds don’t like to share main speakers.  The world is evolving and soon avr’s and stereo preamps will have to play more nicely together.  For now, this relationship is troubled.  
Presently, stereo enthusiasts and home theatre users don’t enjoy working together.  I am a loyalist of both sides.