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R/E/P => Klaus Heyne's Mic Lab => Topic started by: zerofly on April 19, 2017, 06:52:28 am

Title: Telefunken AC701k: Fake Tube?
Post by: zerofly on April 19, 2017, 06:52:28 am
Hello Klaus, good people,

I have stumbled upon these tubes at a fair price, but, they look a little weird in aspect compared to what i'm used to.
They are clear, not black and the logo is horizontal.
i have attached some pictures.

Can these be fake? real?
Please!

many thanks.
Title: Re: Ac701k fake?
Post by: klaus on April 19, 2017, 12:17:18 pm
Without intention to brag, I've seen thousands, but never seen one like this.
Plus: "attractive price? No, I would not buy it.
Title: Re: Ac701k fake?
Post by: zerofly on April 20, 2017, 09:37:09 am
Hello Klaus,
Yes, your probably the person who has seen more of these tubes.

Yap, sounds like rip off, i'm not going for it.

plus, when i contacted the seller regarding the aspect of the tubes i got this:

As far as I confirmed this item is unused however the supplier bought it
which made in the former East Germany 30 years ago in USA .
It would be compatible with AC701 K which made in West Germany.
We will be cover the warranty for bad tubes.
Please consider it.


Any truth in this?

thank you very much for the help!!
Kind regards,
Pedro
Title: Re: Ac701k fake?
Post by: uwe ret on April 20, 2017, 10:34:28 am
That seller's statement flies smack in the face of the stamped declaration of "Made In Western Germany"!
Title: Re: Ac701k fake?
Post by: zerofly on April 20, 2017, 11:48:59 am
That seller's statement flies smack in the face of the stamped declaration of "Made In Western Germany"!

Hahaha,
Yap, did it even look at picture after his reply.
Nice one!!!
Title: Re: Ac701k fake?
Post by: zerofly on April 20, 2017, 11:54:48 am
Here is another from the same country of origin but twice the price!
Title: Re: Ac701k fake?
Post by: soapfoot on April 20, 2017, 11:59:42 am
Very interesting. Could these be older fakes/counterfeits? I wonder if the seller is willfully operating in bad faith, or whether they may have been a victim of misrepresentation themselves.
Title: Re: Ac701k fake?
Post by: klaus on April 20, 2017, 12:58:53 pm
The East German, state-owned, RFT company made a tube like the AC701 that was used in Neumann/Gefell's pencil and stereo tube mics. That tube was called "AC761", and looked almost identical to the AC701 made by Telefunken in Ulm, West-Germany. But this tube, nominally with the same specs as the AC701, was often noisy from the start and those that were not, usually became unreliable in the long run.

It it possible that someone got ahold of a bunch of these, relabeled them and the packages they came in, and put them on the market, at a time when it was much easier to fool customers with fakery than it is now.
Title: Re: Telefunken AC701k: Fake Tube?
Post by: zerofly on April 20, 2017, 06:21:16 pm
The shape matches the AC761, even if so, allways noisy isnīt a candidate!
Title: Re: Telefunken AC701k: Fake Tube?
Post by: J.J. Blair on April 21, 2017, 09:05:08 am
I have seen and heard these.  Avoid. 
Title: Re: Telefunken AC701k: Fake Tube?
Post by: zerofly on April 23, 2017, 05:07:41 pm
Hi good people,
Thank you very much for de advices.

Kind regards,
Pedro.