The best sounding tube compliment is
Sylvania 5AW4 Ken-Rad 1633 GEC 6AS7
Thanks Punnit for lending me the GEC 6AS7s
You are most welcome . Time to take a break from making amps for a few days & just sit back & enjoy the music.
Edit - Quite fitting that this should be my 1000'th post.
The Sylvania looks Identical to the CBS I think they were both made by the same company.
I will give you another one for a spare not sure of the label but it will be the same tube.
There not that tuff, that is if you manage to insert them without cracking them this happened to a few guys on the LittleDot thread including myself bad production who knows never had that happen to me before. Thanks