For all you 12AU7 users, have you tried the RCA 12BH7? After rolling many 12AU7 variations, I learned the 12BH7 would work and once I heard the RCA in my preamp, CD player and amps, there was no going back to the 12AU7.
Anyone ever have, use or hear this tube?
I always thought that the pinnacle of the ecc82/12au7 type tube was the Telefunken ecc802s. Even better than the Amperex 7316. But, I recently found out that there is an extra special designation for some ecc802's dubbed the G73R. These are supposed to be unmatched in quality and longevity, said to last 40,000+ hours! Anybody familiar with, heard or own these things??