A rugged medium-mu (27) tube with operational
specs somewhere between 12AT7 and 12AU7. Despite its slightly lower plate
voltage and current ratings, this tube can safely replace the 12AU7/ECC82 and
12AT7/ECC81 in many applications.
Very rare tubes with exceptional build quality!! Just like the Telefunken's these have similar rugged construction with side flanges and welded plates as seen on the photo above. Made in Holland by Heerlen factory and imported to France for IBM. All tubes in stock have identical production codes.
Quantity is Stock : Out of Stock!
Price : US$79,00/each ;
US$163,00/matched pair
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