I meant not the Beryllium tweeter version. I never got the upgrade bug with these.
I just couldn't find the right amp for them, over years of trying multiple tweaks and pre amps. They are truly the best example of a analytical and highly detailed sounding speakers I have owned .
The Best pre for them turned out to be a two 6SN7 - AE-3 from Cary's sub brand AES that cost me all of $350 used. When I finally tried some tube power amps in my case mono blocs, when Joe T was importing Consonance products. The world of great music suddenly appeared. Yep just some crazy good sounding Chinese Consonance Cyber 800 monoblocs, with 4 EH 6CA7s in each and NOS input and driver tubes. I don't think the rest of their stuff is nearly as good, there is something in the trannies and circuit they used for these amps.