I have a Wright WLA12A, and find the EH 6SN7s very listenable and a bargain at $8.95/ea. They're far superior to the Sovteks I own, both the 6SN7s and the supposed "milspec" 6H8Cs. If all NOS tubes went away and I could only get new production tubes, I could easily live with EH.
That said, there are definitely NOS tubes that sound better. I have Sylvania GTBs that are my current favorite, and GE GTBs with the top filament that are a close second. I didn't have to pay a lot for either, and I've never tried any really expensive tubes - not sure my preamp or the rest of my system warrant them.
I'm interested to try the Shuguangs...with the metal bases, you can dream that they're $400 Sylvania Ws...
:-)
That said, there are definitely NOS tubes that sound better. I have Sylvania GTBs that are my current favorite, and GE GTBs with the top filament that are a close second. I didn't have to pay a lot for either, and I've never tried any really expensive tubes - not sure my preamp or the rest of my system warrant them.
I'm interested to try the Shuguangs...with the metal bases, you can dream that they're $400 Sylvania Ws...
:-)