[VIDEO]http://www.youtube.com/watch?v=cGKV_xrnIxA]Jet City RetroValve Amber and Blue Versus a Tung Sol, EHX and JJ 12AX7's - YouTube[/VIDEO]
Argue among yourselves. He hasn't posted which tube is which yet.
Problem number one, he's doing this on YouTube, which is notorious for tone-destroying, fizz-inducing levels of compression. Still, and interesting idea, so I'll give it a listen.
I bet 2 or 4 is the JJ. It has that muffled character that I am used to hearing from them. So far, I like 1 the best, since it seems to leap out of the mix best.