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
One of my Elrog 300B's also died on Lampizator Big 7 recently. Fortunately, they were still within warranty and I returned them for a refund.

I surely hope that Elrog could sort out the issue. They were sounding fantastic.
Brownsfan, the current incarnation of the Frankensteins have an HT fuse that protects the Frankenstein in the event the 300B tube fails. If you have this version, your amplifier should not have been damaged by the Elrog's failure.
Tmm, Is the 2nd fuse internal? Externally, there is only one fuse visible, the standard mains fuse.
Brownsfan, on the most current model the HT fuse is external. To be safe, I would ask a technician to evaluate your Frankenstein to make certain the tube's failure did not compromise your amplifier.
Bill,
If it's any consolation my Frankenst MK II (purchased 2009) is much older than yours. Fortunately I suffered no amplifier damage when the original Elrog went bad. I just popped in an EML and all was fine.
Charles,