Elrog 300B vs Takatsuki 300B tubes


Has anyone heard the Elrog 300B tubes ? I read an article which mentioned that the Elrog 300B delivers 15% less power than a traditional 300B tubes. Can anyone confirm that it is audible ?

I am choosing between Elrog and Takatsuki 300B tubes. I would prefer the Elrog because it is cheaper and supposedly wonderful but if it really sounds less powerful then I have to rethink.
pani
Joe,
I received a message from George this morning asking if I could have someone measure my amplifier's plate voltage. This may have preceded him contacting you. If he can do your Frankenstein himself that's ideal. I also greatly appreciate his efforts to solve this problem. Joe I look forward to seeing your results with George.
Charles,
Charles,
George at first asked me if I could get the reading. I told him I wasn't really comfortable doing it, so he said he'll do it when he has a chance to come.

That is very nice of him because he isn't to close by.

Joe
Almarg,
I forgot to tell you what a great asset you are to this audio community with your technical knowledge and easy to understand answers.

I thank you, Sir

Joe
I agree that George Lenz has been very helpful here in working toward a solution for those Frankenstein owners who would like to use the Elrog tubes.
Joe, thanks very much for the nice words. And best of luck as you proceed on this issue.

Best regards,
-- Al