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Platinum matched pair (2 tubes) GU50 ( FU50 ) NOS NIB Unopened Soviet Army boxes

Platinum matched pair (2 tubes) GU50 ( FU50 ) NOS NIB Unopened Soviet Army boxes

€24,95
€24,95
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One platinum matched pair (two tubes) GU50 NOS (FU50) in original Soviet Army boxes (opened just for testing and matching).


Tubes are carefully tested and matched by plate current from the huge batch we have in stock. Direct replacement for Chinese FU50, but much better sounding.


They are the same codes, the same year of production, from 70s, much better than later ones from late 80s and 90s. 

GU50 is powerful RF pentode (Pa=40W), used in many audio amplifiers and HF linear amplifiers, very similar to Telefunken Wermacht LS50 pentode. 

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