What would it take to our do my Audio Research PH3se.

First off I messed up on the title. Don’t know how to change it. Sorry. 
I love my ARC PH3se. I also have a Parasound JC3+ on another system. Both are good. But if I had to keep one it probably be the ARC.

That being said, it’s getting old, no it is old, and one day it may (will) go to the great audio heaven (assuming I don’t just repair it) in the sky.

assuming I wanted to buy new, what is the minimum I would have to buy to meet or exceed what I have if I wanted the same sound.