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6DN7 GE branded RCA NOS 1960 era (39ma and 6.5ma)

6DN7 GE branded RCA NOS 1960 era (39ma and 6.5ma)

$ 14.99

1 tube) 6DN7 GE branded RCA NOS (1 plate) black) (1 plate) gray 1960's

39ma Gm=7700

6.5ma Gm=2200

 

Tested on Amplitrex

1 section) Good NOS Ma=35-40ma and Gm=7000-7700

1 section) Good NOS Ma=7-8ma and Gm=2200-2500

 

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