[R-390] "Fake" 12AX7 tubes on e*pay

[pulsarxp at earthlink.net]

What Eastern block country makes a good 6L6 tube these days?  Are there
any? I need one for my Globe Scout.  Seems like US 6L6 tubes have gone
through the roof due to the audiofile guys.
Lee



> > Reputable dealers like Triode Electronics in Chicago sell russian and
east
> > european new tubes that are excellent.  I think some negative comments
> > made by some to the contrary are old wives tales.
>
> I have many "Tesla"/"JJ" (E European) 12AU7A's (actually labeled ECC82, I
always
> thought ECC82 equals 12AU7A's but seeing the subject line maybe you don't
> think so) and several have already failed with cathode-to-heater
> shorts in the past couple years. Maybe 30% failure rate. That is not
> "excellent" in my book, to me it indicates less-than-stellar
manufacturing.
>
> It's pretty obvious (from the massive amounts of hum) when the short
happens.
>
> Maybe I just got a bad batch. And my batch was only 20 tubes. So discount
> my experience if you wish.
>
> I have bought batches of surplus JAN tubes (typically 60's/70's/early
80's)
> as well and have not experienced this problem with them.
>
> Tim.
>