Cayin H80A - Preamp tube rolling

Thanks for your respnse Uberdine. Sorry I haven't responded sooner but I've been traveling. I'm not sure what the original tubes were because I bought them second hand and it looks like the original owner has put in a Groove Tubes that are in fact 12ax7's, which have too much gain. I was actually considering Amperex's or Telefunkens, maybe the latter for more smoothness since it's a solid state power section.

Bobul,

Thanks so much for your suggestion. I'll look into the Sylvanias. I'm running bookshelves as well, Dali Mentor 2's. I'll keep you posted if I try anything else. Cheers.

Hao