I've been running Klipschorns for some years now, in stock form the limitations easily heard. Certainly far more sense of performers in room vs. dynamic compression speakers, but timbre, tonality left me wanting. End result I wanted to retain best aspects of khorns while improving anomalies I heard. I ended up changing out all three drivers, Volti tractrix horns on mids, custom baffle on tweeters, with tweeter baffle I can physically time align tweet with mids. Also completely went over type A crossovers, with all point to point wiring, Jantzen inductors, Jupiter and Audyn True Copper Max caps.
So now I have khorns that image, have much better tonal balance, more natural timbre, even greater resolving/transparency. This while retaining that magical Klipsch Heritage sense of live performers in room.
I much prefer all tubes with the khorns, custom build 300B monoblocks with Duelund CAST, Texas Components TX2575 vs push pull or SS amps, prefer modded Coincident Statement pre vs Pass XP-22. These particular khorns, tuned exactly to my preferences will never leave me.