This is a great day. Why you ask... well I'll just tell you. I just bought a locally owned 95 SVT II pro in good condition. The owner moved to another country and the amp was officially owned by the band. The guitarist, who sold it too me, told me that they had it retubed immediately after they got home from a 2 month tour. The band broke up immediately after it's retubing. He swears the tubes are completely new and were never used once. I got a decent deal so I didn't even bother checking what pretubes were in it while thinking the whole ride home, dang this head sounds good. I was planning on swapping the pre tubes to probably JJ 12au7's... maybe 12ax7's... wait... what's this... THEY'RE NOS AMPEREX 7316/ECC186's!!!! If you don't know what these are, they're just about as rare as can be and have been said to be the best 12au7 ever made! OMG! I think i just pooped a little. This is a great day that will live in infamy. I just had to share my JOY with the world.