Telefunken vacuum tube E88CC-TK; NOS versus brand new.



Telefunken vacuum tube E88CC-TK; I just purchased a pair of these and they are fantastic; they raised my phono to a new level.


Now here's the question, I paid $60 apiece for a pair of these brand new. "Uncle Kevin" at Upscale Audio, sells these for $349. apiece. His are NOS, they should cost more, they also probably last longer, but do they sound better? That is the question. It is not in my budget to pay $700. to find out. Do you have any comments on this?
orpheus10
Telefunken never had a factory, or-manufactured a tube, in Slovakia.   All of their assets, during their vacuum tube production years, were located in Germany.      There is no, "same factory".      The name/logo wasn’t even purchased/licensed, for use in the USA, until 2000.     It was well after that, JJ (et al) contracted to make tubes for ’Telefunken Elektroakustik’.    https://en.wikipedia.org/wiki/Telefunken#:~:text=Locations%20and%20manufacturing%20plants,-FE%20I%20....      I’m not saying there’s anything wrong with their tubes.      BUT- they’re NOT Telefunkens, in anything but name/logo.
op

https://www.adorama.com/tfe88cctkq.html?gclid=CjwKCAjw8-78BRA0EiwAFUw8LK11bf0-Cy4Geg8n2lXvcYvr-x5tG5...

^^^^^what you bought -- it is a gold pin sovtek/electroharmonix made russian tube

https://tubedepot.com/products/electro-harmonix-6922-eh-gold-pin-preamp-vacuum-tube?gclid=CjwKCAjw8-...

^^^^^ same same - probably one of the best modern 6dj8 types... certainly well qc’d at the plant so as to justify the price

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just so you know op - a real german made tele small signal tube will have a 4-seamed top and usually a diamond mark on the glass circle at the bottom of the glass envelope inside the 9 pins

https://www.tubemonger.com/Telefunken_E88CC_6922_MINT_NOS_NIB_1968_ULM_Diamon_p/1190.htm


To anyone's knowledge, are there counterfit TFKs with the diamond stamped in the glass on the bottom of the tube, or can one assume that if the diamond shape is there, we have a genuine TFK?  Seems to me by now someone must have copied it, so you can never be sure what you have.  In my case, I have ECC83s that I personally bought new in the mid-1970s.  Only because of that, I am fairly confident they are real.
Lew, I believe the Telefunken diamond is unique. It's too difficult to fake. Most fakes are in the lettering and logos.