6SN7 suffixes

I'm using 6SN7's in my Atma-sphere equipment. I was curios about the multitude of letter suffixes that follow the 6SN7 tube type.

fatparrot02-11-2005 7:42pm

gunbei Details Discussions Posts This discussion Message User 2,327 posts 02-12-2005 at 12:38am Copy Comment URL Report Comment Edit Delete Fatparrot, I was waiting for more experienced users of the tube to chime in first, but since no one has yet, I'll post. Did you want to know what the actual GT, GTA, GTB, W, VT-231 designations mean or were you more interested in their sonic characteristics? I've been rolling different 6SN7s in my Blue Circle preamp for over three years. I don't actually know what any of the suffixes stand for, but I have learned some of the tonal differences and which ones I like more than others. I've found that the different manufacturings such as Sylvania, RCA, Raytheon, Ken-Rad, Tung-Sol, etc... all have their own distinct flavors as well.
fatparrot OP Details Discussions Posts This discussion Message User 1,314 posts 02-12-2005 at 01:01am Copy Comment URL Report Comment Edit Delete Gunbei, I was more interested in the designation of GT, GTA, GTB, W, and VT-231, and what they actually mean. I am pretty happy with the voicing of the Sylvania VT-231's in my system. What have been your experiences rolling the various 6SN7's? Why does everyone seem to rave about the Sylvania metal bases or the Sylvania "chrome domes"?
nutella Details Discussions Posts This discussion Message User 223 posts 02-12-2005 at 01:45am Copy Comment URL Report Comment Edit Delete http://home.att.net/~chimeraone/6sn7sound.html