My list of premium ECC88 6DJ8 tubes I had an opportunity to test:
"The best ever ECC88 / E88CC / 6DJ8 / 6922" is CCa Siemens gray shield
Than: Philips Miniwatt E188CC 7308 two stars
Next one is:CCa Siemens silver shield
I didn't listen Telefunken CCa, but I tested E88CC 6922 Siemens and E88CC Telefunken 6922 diamond bottom and Siemens gray shield is much better than both of them.
Enjoy the music!
"The best ever ECC88 / E88CC / 6DJ8 / 6922" is CCa Siemens gray shield
Than: Philips Miniwatt E188CC 7308 two stars
Next one is:CCa Siemens silver shield
I didn't listen Telefunken CCa, but I tested E88CC 6922 Siemens and E88CC Telefunken 6922 diamond bottom and Siemens gray shield is much better than both of them.
Enjoy the music!