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NOS Telefunken EC92= 6AB4
NOS Telefunken EC92= 6AB4

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Product Code: TFK_EC92

TUBE MUSEUM CERTIFIED ULTRA-LOW-NOISE SPECIMENS, TUBE MUSEUM QUALITY  TELEFUNKEN BERLIN WEST GERMANY EC92 = 6AB4 - Rarest NOS TELEFUNKEN BERLIN Germany Old Production without < > diamond, with the signature Telefunken FAT "O" getter-ring..   Almost NEVER SEEN, these are the MOST SCARCE NOS of the 6AB4 for NEUMANN GEFFEL UM57 UM92 made in BERLIN, Germany in the early 1950's to early 1960's.

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