Opera Consonance Linear 2.2 or Raysonic 128?

I have the Ref 2.2 and liked it in stock form (6H30 tube). But I had it modified ("factory mod") by a former Consonance dealer and now I LOVE it! He changed output caps to 2.2 450 volt Auricaps, replaced output diode, re-wired power supply for voltage to caps, and replaced output tube with JJ Tesla EC-99. Improved overall detail with sweeter midrange. In case you get the Ref 2.2 you might want to consider this mod (I think I paid $300 for it) - well worth it.

No issue whatsoever horizontal mounting of ECC99 in Ref 2.2! None! I have it on good authority (well known and highly respected tube guru) that there is NOT any issue mounting this specific tube (nor ANY tube unless restriction stated in its data sheet) horizontally. Been a couple of years for this thread but must set the record straight. This fear has plagued the back of my mind for years. And it was pure hogwash. So fear not.