I am starting to look into replacing my B&K Reference 20 preamp. Fortunately, it is still working and sounding great (knock on wood). Eventually I want to upgrade to a modern preamp (or receiver) that has Dolby Atmos, HDMI switching, etc.
The thing that I love about the Reference 20 is its rock solid stereo imaging. I can listen to TV shows in stereo and you wouldn't even know that there is no sound coming from the center channel. Years ago, I had a $2000 Marantz preamp as a loaner while my Reference 20 was getting repaired and the difference in sound quality and imaging was clear.
I wanted to see if there were any other folks out there with experience with the Reference 20 and what they replaced it with.