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6922 tube

I have a Cayin CD17 Mark1, takes 2 6922 unbalanced (which i run in) and 2 balanced(which i never will use), So I hada   tube flipping business that went sour = lost $$$$,,anyway,, started buying all sorts, A-Z 6922/6dj8,7dg8, ecc88, cc88, etc etc, 188's, 288's, etc etc, I;'ve heard nearly every variety/lab of this variant. 
= all sounded nearly identical..
Now maby in your Acoustic reserach a  6922 can be diciphered from others,,but in my cayin CD17, all sound nearly identical. 
So I figured, <<must be the circuitry = not so sensitive as per tube typology>> , long story short,, one of the 288's, were bad, amperex, like $125 each,,so a  friend lent me a  pair of russian military Gold Aero,,,pulg them in,,, wow, my system went sour., after all my countless mods, with super high tech parts, were made ~~null and VOID~~~,,all over a  pair of 6922 russian Gold Aero military tubes,, He says they are actually not 6922;'s, but,, can't recall the specific name of this tube. 
But its far and away from a  true musical 6922. 
While every other Tele, Siemens, vavlo (both Red print and White) Philips RCA , GE etc etc ETCCCCC,,all sound nearly exact..
~~~~~Bottom line~~~ Do not waste your money buying the Tele 6922 pair froma  german seller for $1500, nor others selling any /all variety of 6922 for over say,,,$20 each,m, Yep you heard me right,, You should  never ever pay more than $20 for any 6922 type tube.
All those countless $50-$1500 and maybe even $2500 fora  pair of  NOS 6922 is pure 100$ snakeoil.
Now a  AX and a  AU, now here we do indeed hear minisclue differences, which make me a fan of Tele and only the Tele. a  Tele offers in my system superior resolution.. Not by much,, but as i've said countless times in all my threads,, a  nunace here, a  miniscule there, a  tweak here, a upgrade there = all adds up to a  superior  sound.
a  6922= 6dj8 = 7dj8, ecc88, =cc88 = 188 =288,,However my tech guy who lent me the russian non muiscal 6922, said this player is best using any 6922, except the 288... has a  dif heater value. 
So do not waste your money thinking a  over $50 pair of 6922's will improve your sound. 
A Tele 6922 is not superior to any 6922(preferable USA/EU) ever made.(just make sure its not chinese= I do not like chinese pretubes>>> nor russian military),,I have a quad of EH's comming in 1 week,, that is one 6922 I've not heard,,will report ASAP. 
rant over.
Snakeoil buster here,
,strikes again..
Toucheeee

mozartfan
mijostyn's avatar
mijostyn
8,570 posts
 
The 6922 is an excellent tube. ARC used it exclusively for quite a while.
The only real difference between 6922s even of the same manufacture is noise levels. I hate to sound like a stuck record but RAM Labs tests every single tube, prices and sells them by noise level. I use their Super Low Noise 6922s in my ARC phono amp and they are an easy 10 dB quieter than the tubes that came with it. They are also $90 a pop and in a phono amp worth every penny.
rodman99999
6,139 posts
 
"The only real difference between 6922s even of the same manufacture is noise levels."              Just keep typing (eventually, at least one person's bound to agree with that nonsense).
mijostyn's avatar
mijostyn
8,570 posts
 
rodmann, nonsense would be a little strong don't you think? I do after all have first hand experience with 6922's as does mozartfan who seems to believe much the same. 
If you want to waste your money rolling tubes and hallucinating.. well it is a free country. For the time being. 
mozartfan OP
2,143 posts
 
I've tried several NOS 6922 pairs in my VAC preamp and settled on 1961 NOS Amperex after finding the Mullards a bit too warm and Siemens much too bright. The Dutch made Bugle Boys were my goldilocks tubes ;-)

OK now this is a  good report,, 
Look since my 6922 tube rolling some months ago,, I"ve employed quitea  few upgardes throughout my system = higher sensitivty = better able to hear dif's in various 6922's. 
So  my OP could be dated/bias/needs futher explanations.
Thus I have purcahsed 
1) quad EH6922
2) Quad Tele PCC88
3) pair of JJ's.
Now when these arrive next week, I will be able to make  a  more clear determination  as to how valid or worthless (=BS) is the content of my OP. 
I could indeed be wrong, all due to multi new upgardes ,,,all which came AFTER I made The Great 6922 tube roll.
As I say, it is these early russian 6922 **military* tubes which alerted  my attention that the circuitb in my cayin CD17, might acutally be more sensitive than I am aware.
New upgardes, caps, resistors, high quality silver cables throughout system,,might now have bumped up the sensitivty of whatever tube goes in the cayin 17. 
We must keep in mind,a  new cap, will send shock waves throughout the system,, 
Certain weaknesses/strengths will begin to show up with employinga  new cap, new resistor, new style tube, new component.

We will find out shortly is all 69922's are near equal, or  not.
Stay tuned,,will report test findings,  ASAP.

tomcy6's avatar
tomcy6
2,589 posts
 
If you want to waste your money rolling tubes and hallucinating

Here is where the trouble always starts.  People try to present what they hear with their ears in their system as universal truths instead of their personal experience.

We could stop a lot of arguments if people would just remember that what they hear is not what everyone else hears.
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