(!!) (BEST SINGLE) 6DN7 GE branded RCA NOS 1960”s (64ma and 7.2ma)

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

64ma Gm=9000

7.2ma 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

– Bottlehead S.E.X. amp (Headphone amp)
– Bottlehead SMACK
– CONN organ console amp 1970”s 2 channel
– MFA Luminence preamp 1990