Elrog 300B vs Takatsuki 300B tubes

Matthais, I am having difficulty locating you using the member search function. If you could PM me, I should be able to respond to your message. By the way, my serial numbers are 9443 and 9477.

I got a pair of ER300B from TrueAudiophile in March 2015. One of tubes has failed in June 2015. As per TrueAudiophile request I shipped tubes directly to the factory.
Here is from the email from TrueAudiophile regarding conversation with the factory:
... I went over it very calmly with him explaining he needs to honor the warranty. He refused. He then hung up on me....
I also email to Elrog stating tubes S/N, date of purches etc. No reply.

As somewhat of an outsider, but one who is interested since I own an 300b SET, I am concerned by the number of failures and, even more, by the inconsistency in the company's response. Elrog has to understand that in the age of the Internet, all of this becomes common knowledge.

Matthias, Thanks for the PM. I responded with the information you requested.

If Elrog has figured out the cause of the reliability issue causing premature tube failure this will be wonderful news for music lovers. I spent the weekend doing quite a bit of listening using the replacement Elrogs(what a pleasure it was). This is a special tube and contributes to superb music reproduction, really involving. Man, I sincerely hope that Elrog gets it all corrected, what a beautiful sounding tube it is. Come on you engineers!