(!!) (Best Overall Single) GB-6080 Sylvania Gold Brand NOS 1960's (110ma/106ma)

1 tube) GB-6080 Sylvania Gold Brand NOS 1960's
1 section) 110ma Gm=6000
1 section) 106ma Gm=5800

Tested on Amplitrex
Good Ma range 70-100ma
 


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(6080=ruggedized 6AS7G, 6080 filament = 6.3V @ 2.5A, 13 watts plate dissipation per triode section)
(also see variants 6AS7G, 5998, 6520)