For balanced 12AU7 you forget CiFTE WAH and military RT WA. Also great tubes are unobtainium Valvo (made in Hamburg) K62.
Don’t forget the E186cc.
All are great tubes by themselves but can interfere and interact more or less happily with the other tubes around.
I played a few years with all that and conclude the partnership is as important for a final sound you seek after than the added sq of the tubes themselves.
All Telef or all « Mullards » or British styled tubes is not always the best choice (for my taste and in my system).
When you cook you have to marry different tastes and when you find the right associations it puts a smile on your face.
Don’t forget the E186cc.
All are great tubes by themselves but can interfere and interact more or less happily with the other tubes around.
I played a few years with all that and conclude the partnership is as important for a final sound you seek after than the added sq of the tubes themselves.
All Telef or all « Mullards » or British styled tubes is not always the best choice (for my taste and in my system).
When you cook you have to marry different tastes and when you find the right associations it puts a smile on your face.