I run my highly modded Klipschorns with Coincident Turbo 845 SET, Prima Luna Dialogue Four (modded with Takman carbon resistors, Miflex and Mundorf capacitors) and custom built 300b monoblocks. 845 tube way more power than you need for klipsch, still great immediacy, performers in room feeling. PrimaLuna use EL34 tube, lush, beautiful, my favorite push pull tube. 300B tube, maybe the most romantic tube. Can't go wrong with 845 or 300B SET amp or EL34 push pull, especially if you can run in triode mode.
Stock Klipschs will work best with the more romantic tubes IMO.
Stock Klipschs will work best with the more romantic tubes IMO.