Amperex bugle boy 6DJ8--nos.Yes, but which one? A fairly accurate review...
https://www.audioasylum.com/scripts/d.pl?audio/faq/joes-tubes.html#6DJ8-2
I’ve tried about 5 variants; they’re very different. Currently using
7308 Amperex PQ (ultra premium 6DJ8/6922) Holland....
same as Philips SQ Special Quality type.
Also have tried the 7308 Amperex PQ (Super Premium 6DJ8) USA.
The Amperex white labels (produced before Bugle Boys) have sweeter mids and smoother highs.