[Boatanchors] Chinese 6L6GC ?

[BLIMPY]

Ask yourself.. do you really have to have GC's  / 5581 / 7025  ?
or will some other plain vanilla 6L6 or metal variant work as well ?

RF or AF ?

I dont think anybody needs a GC for RF.

I just bought a pair of these things.. .because they were cheap, and I'm 
poor.  I have 3 AF-67 to re-tube.  I sprung for matched set for modulator 
use.
Time will tell how they behave.  It's not that demanding.  Not like a hot 
rod guitar amp that eats tubes for lunch.

( dang guitar nuts want Tung Sol 5881's  then wreck them with overdrive ! )

If you want good tubes for  good audio.. and can't pay the freight for Tung 
Sol or Sylvania or RCA...  then the Sovtek will be the cheap new tube of 
choice.
These play nicely as single ended driver service in globe kings, and work 
fine in P-P audio situations.

There is a true story of the guy who found a cigarette butt in one of his 
new chineese tubes.  Should tell you something.
I would put that down as urban legend if I didnt know somebody who'd seen it 
!

What really bothers me about many of these cheap tubes is that the rare 
metals once used in the production of good tubes
may well be skipped or skimped .

I have had good luck with  12AU7 and 12AX7 tubes from Slovakia, Russia  ( 
JJ, Sovtek, Svetlana)  for general use.
And Russian 6L6.

On the other hand, chineese are getting thier act together  with more and 
more ISO certified factories.

So a difinitive, I dunno from me.