Favorite 300B: Sophia vs KR

Markus1299

Always test tubes before using them in your amp. Ones, I tried to use 300B TJ Full globe/mesh, what ever they called, and this cost me an USD60 fuse and I am lucky that it was fuse only. Never again.

My VAC 300bs are marked 48 or 47, so that gives me SOME better confidence but not much if that can vary so much depending on the test conditions.

Swampwalker,
Al makes a very good point concerning the 'ma' value can very under different test conditions or machine used.
My Takatsuki spec sheet said my tubes ma is 66.6 for both tubes. My friend has a digital tube tester and measured my tubes at 75.4 ma.

Markus I`m really happy the Takatsuki worked out for you. They`re a lot of money but I felt the level of your system would exploit this brilliant tube`s quality.

Has anyone been able to compare the Takatsuki with 1950 WE's?

I've just managed to purchase some 1950 WEs. After they arrive and they have run for a couple of weeks I can try and do a comparison between my Takatsuki that I have had since September.

Simmo2741,
I believe many of us would appreciate a comparison such as this. One of the very best current production 300b tubes and what`s likely the gold standard 'early' Western Electric 300b tubes, should be interesting.