I did crack up when I saw one comment that one of our amps had "no center image". I'll bet money that the guy was listening to some classic 50s or 60s hard left-right panned recording like Nat Cole sings, George Shearing plays....
Here we go again with another patented Steveidosound thread hijack...
I love the old, as we used to call it "sterile stereo"!
Pan pots? Panning? My old Ampex mixer has
switches Left/Both/Right ! :-)