Thanks for revealing their negligence. I hope that it costs them future business. At very least, they may see this post and be shamed into making you whole.
The REAL St. Petersburg, Russia Svetlana plant met its end in 2012.
Their 300B's were the best sounding and most unreliable 300B's that I ever used in an early production Audion Silver Night stereo DH/SET amplifier.
I much preferred them to WE's (screened logo on base) and everything else I tried @ the time, which was early on this century.
Out of 4 pairs only one pair made it past 500 hours without failing (sold that pair with the amp).
A few other users with super slow start up power supplies (Border Patrol comes to mind) had much better results, but also failures as well.
Not a vintage tube that I would seek out unless you have super slow start up and only listen a few hours a day.
I have had the same problem with vintage (engraved base) Visseaux 2A3's in that out of 3 matched pairs I am now down to one pair.
I'm saving the last pair for (at a minimum) a 5ar4 rectified 2A3 amplifier.
I recall other online forum complaints about JAC or JAX, but not the details.
Thanks for your comments, guys (and gals?). I can't say anything bad about their tubes. I think they are first class, sound great and I accept you get a dud every now and then. It's the way this was handled - or actually not handled. Great tubes - not so great distributor. I hope this will spare others from a similar experience.
Today I received an email from Anthony at Music Reference/RAM Tubeworks where I purchased the tubes. Anthony went above and beyond trying to help me though there was little he could do. He is a first class guy and would recommend to anyone. But, I digress.
He heard from Jac and who told him he was sending me a new tube tomorrow and could take a few weeks to get here. Jac also told Anthony they are not making the solid plate 300B 2.5 anymore but they will send me one that has a different plate but shouldn't sound any different (so much for the matched pair I purchased).
The clincher is that he can't possibly be sending me a tube tomorrow - he doesn't have my address and wouldn't know where to send it. I'm afraid that angered me to the point where I replied to Anthony that he could tell Jac to f**k off. I accept I got screwed and I'm tired of either being completely ignored (for 9 mos and numerous emails) or lied to now.
If anyone is considering EML tubes just keep in mind that if you buy from one of the few distributors, they will tell you (or should tell you) that any warranty problems must be directed to EML and that means Jac. There is no alternative. And you certainly shouldn't have any confidence in their warranty. I wouldn't trust that guy to tell me what time it is.
Had an email from Jac this morning that my tube was shipping. I don't know where he was shipping it to. If to the address on my email - it is an office that has been shut down during pandemic and not yet opened. No one to receive mail or packages.
I told Jac to keep his tube. I want nothing more to do with EML. In my opinion, responding to a warranty issue after ignoring me for 9 months, is not worth much. I didn't have use of the tubes for that time, the tube that he is offering as a replacement is somehow internally different than the other. I already accepted my loss and I sure don't want to let him off the hook at this point. EML's definition of warranty conflicts with what most of us would expect.