oldest tube(s) in your system

Please let us know what they are running in too. Thank you for your attention to this matter...ha!

2 x 1949 Sylvania ladder plate 6BL7GT (in monoblock amps, custom built 2 x 6BL7GT + 4 x KT77)

xenolith09-10-2025 1:28am

jackd Details Discussions Posts This discussion Message User 1,125 posts 09-10-2025 at 03:26am Copy Comment URL Report Comment Edit Delete A pair of November 1943 Sylvania 6SN7 GT's in Supratek Cabernet.
xenolith OP Details Discussions Posts This discussion Message User 211 posts 09-10-2025 at 04:24am Copy Comment URL Report Comment Edit Delete Zoiks; 82 years old! It’s not a competition, but wow, that’s old...and no doubt great.
grinnell Details Discussions Posts This discussion Message User 1,186 posts 09-10-2025 at 02:02pm Copy Comment URL Report Comment Edit Delete Brimar 6V6G st from the 40's in my Decware Mini Torii
sfgak Details Discussions Posts This discussion Message User 210 posts 09-10-2025 at 02:29pm Copy Comment URL Report Comment Edit Delete Ken Rad JAN 6SN7 VT-231 black glass, military stock from 1944. One pair in an LTA Aero, and one pair in an LTA microZOTL L3. I like them better than the Ray Reserves — slightly wider/deeper soundstage, better imaging and decay.
sns Details Discussions Posts This discussion Message User 4,218 posts 09-10-2025 at 04:00pm Copy Comment URL Report Comment Edit Delete Cunningham 71A tube, in Tektron preamp (Italian company), this tube in production from 1927 to early 40's, don't know exact date of mine. Also have any number of various 50's era tubes running in a number of components.