Ok back from 12AX7 tube shootout.
Mullard/Siemens/Philips and assume my RCA/GE's as well, all 4 very EXTREMELY close to Telefunken, = Tele by a thin edge. Now i know why Tele's go for 2X's the price,,folks want that ~~~miniscule nuance edge~~ ,, are they worth the extra $$$ = IMHO ,
No., The Tele's are not worth the 2X's price,,any old NOS 12AX7 will do ~~just fine~~. Now what 12AX7 am i going to keep?
Telefunken will stay.
= if you do not have a class A set up, don't waste money getting Tele and thinking you are going to get a nice sonic gain.
You are wasting your money.
Just get any NOS 12AX7 as they will sound same in your class B system. = cheap RCA/GE's will work perfect. In a class B setup,
~~RCA/GE = Siemens/Telefunken/Mullard/Philips.
~~Snakeoil Buster~~ down here in the Big Easy