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In Reply to: RE: NOS ? posted by Tweaker456 on February 23, 2016 at 21:12:26
Pins are discolored quite often on brand new old stock tubes. That is NOT a reliable way to tell if a tube has been used.
That's all I'm going to say. Buy tubes from a reputable source and you have no worries. Otherwise you're going to quickly find there is essentially NO WAY to tell if a tube is brand new or lightly used and it's your risk.
I'm sorry if that seems harsh, but this discussion has surfaced SO many times that there's no point in rehashing it.
Follow Ups:
Jim McShane and Kevin Deal (Upscale Audio).
That's about it.
"To Learn Who Rules Over You, Simply Find Out Who You Are Not Allowed to Criticize."
-Voltaire
I'll second Jim McShane and Kevin Deal. Also EveAnna Manley.
WW
"A man need merely light the filaments of his receiving set and the world's greatest artists will perform for him." Alfred N. Goldsmith, RCA, 1922
I've purchased many a tube from them. Since I have but one backup set of SED tubes for my amps, I ordered online another sweet sixteen while they were still available. I received an email telling me:
"The last batch of these tubes to come from the factory prior to shutting down exhibit a "soft vacuum," which causes them to fail prematurely when they are pushed hard."
They recommended alternates, but since I was interested in one last chance for SEDs, they allowed me to cancel the order.
Honesty is truly the best policy.
The latest prod dates of SED Winged C 6550s 2011s don't measure very strong and I've had a few lose vaccuum entirely. Upscale was good about it when it happened.
Edits: 02/27/16
Different personalities though. Don't expect Kevin to be Jim. 😎
"It's all fun and games until someone doesn't pick up on the sarcasm"
Edits: 02/26/16
NO WAY to tell if a tube is brand new or lightly used and it's your risk.
Thats way there is so many NOS/NIB Tubes sellers in ebay...
Impossible to tell if a tube is NOS unless you have kept track of it over 50 years or it is in a factory sealed carton. A seller should say it tests at NOS levels rather than claim it is NOS.
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