I have the non HP version of the same PL amp. Have run all the tube rolling experiments you are considering.
would suggest you may want to upgrade the coupling caps, The amp really opens up when you do that. I used Jupiter copper foil caps, matched them with PSVANE Gray glass KT88s.
would suggest you may want to upgrade the coupling caps, The amp really opens up when you do that. I used Jupiter copper foil caps, matched them with PSVANE Gray glass KT88s.