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Amperex BB ECC82 - Real or Fake?

hafp

Member
2008-02-05 10:17 pm
Would appreciate information on NOS Amperex Bugle Boy ECC82 tubes.
Read on another forum years ago that any Amperex BB tube stamped "Made in England" were fakes; real ones are labeled Made in Great Brittan.
Can anyone confirm this?
Pictures is of a tube pulled from an old reel to reel machine which looked like it had not been touched in at least 30 years.
The etching on the tube is k61 / R8J; and has the correct 17mm long plates with a square getter.
Thanks.
 

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kevinkr

Administrator
Paid Member
The few bugle boys I have all have much tidier labeling. These don't look convincing to me, but....

I have a small number of E82CC/12AU7WA Amperex made in Germany and Holland. Orange globe logo.

Amperex was a premium line and were always top quality tubes until Rich*rdson bought the rights to the name and started sticking it on tested military surplus sometime in the 1980s. (?)
 
I seem to recall that the R code means made in Mitcham, which is where some of the military and SQ stuff was made. It is possible that this originally had just a military CV number, but later was re-marked by persons unknown as a civilian valve. So it could be both 'fake' (Amperex label was a later addition) and genuine (made in a Mullard factory) at the same time!
 

hafp

Member
2008-02-05 10:17 pm
The few bugle boys I have all have much tidier labeling. These don't look convincing to me, but....

I have a small number of E82CC/12AU7WA Amperex made in Germany and Holland. Orange globe logo.

Amperex was a premium line and were always top quality tubes until Rich*rdson bought the rights to the name and started sticking it on tested military surplus sometime in the 1980s. (?)

Yes my thoughts exactly; regarding the labeling being a little too "nice" for a 50+ year old tube that is a used pull.
The other comment about the tube being produced using Philips tooling makes sense too; as the tube has all the proper internal build structure.
Yet it does not have that "k61" tube sound.

Another recent interesting find is a tube labeled Webcor 12AU7 Made in GB.
This one also has the k61 etching, but date code is R9J4.
It also has short 14mm ribbed plates with a round getter.

From what I've been told, all real Mullard "k61" ECC82s were 17mm long plates.