Western Electric 300b Tubes - Differences

I've done a little research on this. Western Electric makes OEM tubes which come in a blue and white box. These are sold to manufacturers of amps which use the 300B's. The specs are the same but they don't come with a warranty. I don't think these are suspect. I'm still trying to get the final word on them.

Pawlowski, I'll get back as soon as possible.

OK here's the real skinny on the Western Electrics. I just spoke with Charles Whitener at Western Electric. There is no such thing as an OEM tube. It's a term that's being bantered around. If a 300B comes in a blue and white box and there's no seriel number on the tube itself, it hasn't met specs and is a B stock tube. The people at Canary Audio had been buying these tubes from Western Electric. I recently paid big money from a guy who has been getting them from Canary and selling them. Mr. Whitener and Western Electric is no longer providing these inferior tubes to anyone. These are now being discarded. Stay away from any seller who has 300B's without seriel numbers. They are bad news. What an expensive lesson I learned. I'm still nauseous over my loss.

Pawlowski6123

I didn't have anything to compare them with. They didn't exhibit any sonic distortion or anything like that. The man at WE told me that the tubes in question do not sound as good as the bonafide 300B's.

Clarification: The Blue and White boxes alone do not translate into inferior tubes. These boxes are indicative of bulk packaging.