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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
mozartfan OP
2,143 posts
 
,, But not sure if my Cayin CD17 is sensitive enough to pick up these nuances,, I'm thinking glad i only paid $25 for a  EH quad,, I don't like that design,, but when they arrive, I'll find out,,So yeah,, eventually i
'll save up for a  pair of Tele's..
In this shootout I  give the edge nuances to the Tele's. 


https://www.youtube.com/watch?v=nxPbvizQneU
I will say this, more bigger nuances to gain via new caps vs new tubes. 
Tubes only make a  slight nuance, whereas new caps, a  medium size nuance. 
rodman99999
6,132 posts
 
Subjectively, I prefer the cleanest, least colored sound, most 3D staging, most accurate tonality, I can get.     The Germany and Dutch Post shared that preference (back when/probably didn't care about sound stage) and contracted, "specially selected" tubes, for their services.      Make mine the early Sixties, grey shield, large halo, external date code, CCa.    ie:  https://www.tubemuseum.org/ProductDetails.asp?ProductCode=SH%5FCCa%5Fsingle                                                        Of course, as subjective and varied as listener tastes are; many absolutely love what seems to me the smothering warmth/glazed sweetness of the British tubes.     The early Sixties Amperex that I've tried, weren't as warm, but still......       I understand: Different strokes and all that.       When I had my shoppe, in Orlando, FL; I accommodated any and all tastes.
dekay's avatar
dekay
5,565 posts
 
Other than etched codes, stamped-internal-ID-plates & Telefunken diamond bottoms I learned to ID 6922 types by their internal construction.

Japanese produced 6922 types are a bit tricky to ID as they used Amperex/Philips Euro parts and machinery, but there are subtle differences nonetheless.

The stencil/label is the last thing I would use to ID a tube.

You list RCA, which never manufactured a 6922 type, so what were they really?

I've had RCA labeled 6922 type tubes that were manufactured by Siemens, Tungsram and Sylvania.

If your GE 6922 types were not a smoked glass 6dj8 (the only 6922 type they ever produced) then what were they?

Not familiar with your Cayin CD17, but would not use E288cc or the Russian 6H30 without checking with Cayin first.

DeKay


rodman99999
6,132 posts
 
@motzartfan- Should you decide have your tube guy send samples to compare; these pages can offer ideas, far as what to request and sonics to expect:         http://hktubeaudio.homestead.com/files/6dj8.html,                                           https://www.head-fi.org/threads/6922-tube-review-17-top-6922-6n23p-e88cc-cca-7308-e188cc-tubes.76107...           and: http://www.audiotubes.com/6dj8.htm
three_easy_payments's avatar
three_easy_payments
2,097 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 ;-)
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