(!) Best Single) 6LU8 GE Admiral NOS 1960”s (2.5/61ma)

1 tube) 6LU8 GE Admiral NOS 1960”s

1 section) 2.5ma Gm=3800

1 section) 61ma Gm=9100

Tested on Amplitrex

section 1) Good Ma=2ma, Good Gm=3000-3500

section 2) Good Ma=50-55 Good Gm=8000-9000