They sometimes sell for $20 for a matched pair, otherwise you can them for about $2 each. Ridiculous price.
The '80s are the equal of the '70s with these tubes, I actually use more pairs from the '80s than the '70s.
Only difference I found was that the '80s tend to have tighter triode matching overall, and tighter range tube to tube, so easier matching.
That could also be something like cathode oxide aging, who knows, or could be component tolerance improvements.
(Only talking about these RFL 6N3P-E, not all 6N3P.)
If you currently have an amp designed for 6SN7 you can try them. Didn't you get a Woo?
Tubes do sound different in different amps, but I do use them occasionally in another 6SN7 I have, they're fine, it's a tough tube.
And they do sound good, no, not as good as the best octal drivers I have, but better than some other octals actually.
(You would need a 2C51/6N3P to 6SN7 adapter.)
Can you send me a link to the adapter needed please? Yes, I got a Woo in place of my MJ2 and although better in some areas I still miss my MJ2. You mean to tell me that all these tubes i thought wouldn't fit DO fit, but with the appropriate adopters, of course? Man, I just sold all my tubes for next to nothing and now it's a possibility that I could have used them!?!?!?! Ugh!!!! I have to laugh.