Elrog 300B vs Takatsuki 300B tubes

Dear Matthias, thank you for responding to my concern. I have never used your 300B tube so I have no practical experience with AC filament supply with your tube. I have the Lampizator Golden Gate DAC that can use 300B, 45, or 101D tubes at the output. I really wanted to try the Elrog 300B tubes, but I was told by one of your former retailer in the USA that the Elrog will certainly FAIL if AC filament supply is used. The Golden Gate uses AC filament heating, so I was very disappointed. Do you think Elrog 300B is compatible with the Lampizator Golden Gate DAC?

Dear Matthias, given Elrog 300B failure in Wyan001's Lampizator DAC, I would not take the risk of buying a pair of your 300B tubes, unless I can be assured by you that your tubes will work fine with the Lampizator GG DAC and will be backed up by prompt replacement or refund if failure does occur. I'm really hoping you can assure me. Regards.

Well after comparing the Elrogs to the Taks I can say the Elrogs are the better sounding tubes with my Franks.
They have wonderful weight and fullness of tone without losing detail and transparency. They are very musical, with piano in the lower registers they are so natural.
The Taks are a little thin in the upper bass and lower midrange in comparsion, but excels in the upper midrange and treble.
The Taks have excellent air and spaciousness and tighter bass.
They are both excellent, but IMS the Elrogs are better.

Hopefully, Elrog fixes the reliability problems. This is my second set that George Lenz gave me to better match my Franks. One of them failed in less then 40hrs. He replaced the bad tube and I'm keeping my fingers crossed that they will last.
They are really wonderful tubes and just make music hopefully, we'll have no more problems, we'll see. George stands behind his tubes and has great customer service so no worries there.

Joe

Hi Joe, how can one get hold of George Lenz?

I'm surprised you're still sticking with the Elrogs. Metthias posted awhile back the Franks run the Elrogs near the edge if not above the recommended specs for 300Bs. I hope your second set lasts.

Dracula1, To be clear the first set didn't fail. George took them back for a new set that better matched my Frank's higher voltages.

George is great to work with and he stands behind his tubes!
Here is his website: tubesusa.com