lets hope there not a bunch of TV tubes......
when I find a box of tubes, out of the 100 or so maybe 2-3 keepers. but its still fun to do.....
I do have a bunch of 6sn7's I've given those out
I do have a set of 12ax7 mullards, at least I think they are, labeled Harmon kardon, made in great Britain.
so this would narrow it down a bit dont you think....
I can bring them for ya to try out if you like
was using these in my big amps, have a tellys in there now
the mullards add a bit more syrup to the sound, and the B.B. are a bit S w ee t as it is, so the tellys kinda even things out
the sound stage with the mullards is nice, when I 1st put them in, it move it out and up
put the other tubes back in and right back to what it was before, not bad , it just got better with the mullards, the tellys did not change the sound stage.