I'm very pleased with the pair of gold pin Amperex USN-CEP 7308s with large halo getters from early to mid 60s in my ModWright Elyse DAC. Very quiet and nice top end. Until this past April when I bought them, I had been gone through MANY different makes/models in this family and that's where my journey ended. I wish you the best in your search!
Seeking suggestions for 6922 tubes
Some years ago Kevin Deal had a good price on a stash of Telefunken gold pin 6922 tubes. At the time I needed a pair for my DAC, and they worked out very well. I'm still using them today. Now I find myself with a preamp that also uses a pair, and it seems the Telefunkens are not available at this time.
I would appreciate suggestions of alternate brands that I might use for this purpose.
Thanks, John