Pre Tube Comparison 12AX7 only

[Hemisaurus]

http://www.cedist.com/tech_corner/12ax7_comparison_of_current_made_tubes

[clockwork green]

That's pretty cool but they let out a lot of the newer Euro tubes and all of the reissues.

[Mr. Foxen]

Doesn't say what circuit they are being run in.

[Hemisaurus]

From what I gather it's their in-house comparison, so they only mention the tubes they stock.

[Fuhgawz]

Great link! These might also be useful:
http://www.tube-town.net/info/doc/tt-tubemap.pdf
http://www.watfordvalves.com/cgi-bin/documents/testreport_2.pdf
http://thetubestore.com/12ax7review.html

Tube reviews are really subjective and dependent on the amplifier though. I really liked Tung Sols over JJs in my old Laney, but I hated the Tung Sols in my OR120, where I prefer the tightness of the JJs.