Bose 901's with "highend ancillaries"??

I STILL see Bose 901's are available here and maybe new after umpteen years in existence and yet I have still never hear a pair (unless you count the occasional high school concert which used the professional version).

Has anyone ever used these with "highend" gear, and if so what was the result??

Just curious if there is actually something good about the speaker other than the marketing the Bose Corporation has done over the years as they have never been inexpensive and even now hold their value pretty well.

And while I ma sure one can do better for the $$$ etc etc I am only looking for comments on how they actually SOUND - strengths and weaknesses