Hi,
I did recently change the tubes, but I did have a slight hiss prior to this also. Right now, I believe that I have Telefunkens in there. However, I collected tubes for years so they could be Amperex or Mullards, etc. I have about 30 NOS 6DJ8s by those manufactures. Actually, come to think of it, I think I actually have Bugle Boys in there. To tell you the truth, I never really believed the hype about differences in tubes until I replaced the Platinum Ram tubes with the Bugle Boys. Oh My God!!!! The Bugle Boys buried the low noise Ram tubes that I had in there. Perhaps I should did into my private stash of unused tubes more often. I'm not sure why I collected them since I never actually used them.
I did recently change the tubes, but I did have a slight hiss prior to this also. Right now, I believe that I have Telefunkens in there. However, I collected tubes for years so they could be Amperex or Mullards, etc. I have about 30 NOS 6DJ8s by those manufactures. Actually, come to think of it, I think I actually have Bugle Boys in there. To tell you the truth, I never really believed the hype about differences in tubes until I replaced the Platinum Ram tubes with the Bugle Boys. Oh My God!!!! The Bugle Boys buried the low noise Ram tubes that I had in there. Perhaps I should did into my private stash of unused tubes more often. I'm not sure why I collected them since I never actually used them.