“TAD” Tubes

<<tad dif build>> correction, look near identical to all other 6550;s
That said, I can attest that each lab 's 6550's/kt88 (same tube) will vary ever so slightly in sonics, The ever popular Gold Lion 6550's did not meet the sonics that i found in the SVET 6550's. 
Next year I will go with TAD's and report back how they compare to my testing in the Defy7.

I need to get with amplified parts and see about a  return <<if needed>>>< I'd hate to be stuck with 12 tubes that do not at the very least match the Svet's. 
My hunch is they will match Svet's in bass/mids , and hoping surpass in the highest registers. 

just doing some research on TAD's  site,,so started cking out all 3 6550 offerings
$55, $70, $100
last i cked out the $100 offering and read this in the descript

<<careflly selected from SVETLANA's production>> 
Bingo
there you have it
TAD = Svet.
and i thought maybe,,,too funny.
Svet's are the <<real deal>> 
I'll just hang with Svet's , why change things up, the Svet's  have a  nice sonic resolution/balance.
I'm skipping the TAD
 https://www.tubeampdoctor.com/en/6550c-svt-tad-premium-matched-sed-6550c-winged-c?c=92

I plan on going with these TAD 6550’s, from Amplified Parts/for my Defy7, 12 matched PERFECTLY,,
After cking out pics, the build/construct does appear to be a <<TAD>> ;-)) different vs the build/construct of the
EH
SVET
Tungsol
Sovtek
Fora few $’s more, Amplified Parts does a perfect match + these TAD’s <<might be>?> close to the <<Legendary> GE NOS 6550;s, which go for $$$$.
So I learned from Richard today at his shop, 6550’s give out after some 2500 hrs,,I listen 6+ hours a day. So this time next year(most likely before) , I will be in the market for the TAD’s.
Nothing wrong with the SVET 6550’s in the Defy, nice all around sonics/bass/mids,, I am looking for a <<TAD>> ;-)), more <<sparkle>> in the highs.
Will post a compare of the Svets vs the TAD’s after arrival. My Defy is having all new Takman Rey (anda pair of 18k REX/Carbon)res installed over the next 2 weeks, Its about 55 res in total
. https://www.youtube.com/watch?v=pc_qExFXryI