Auction is for one platinum matched quad (4 tubes) perfect selected of rare EL84 6BQ5 Tungsram Hungary rebranded Standard Brand Industria made back in 70s.

same construction: three staples,
same - 00 - plate construction,
halo (O) - getter - very rare!

Getestet mit RoeTest V8
Testdaten:
UA: 250V
UG1: -7,30V
UG2: 250V

IA=70/70/70/70mA-145% (100%-48mA)
Perfect selected

Kenn.-Nr. 1620/1620/1620/1620

hardos174 wrote:
For the most part of the guitar players and the audiophile, the TUNGSRAM are one of the best
EL84/6BQ5, if it's not "The Best"!! Better than TFK or Siemens, and better than the US
made 6BQ5 tubes, too !!!

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