(!!!!) (Pair) 12B4A GE NOS rebranded Raytheon and RCA 1960's (35ma and 37.5ma) (same Gm)
$ 20.99
1 pair) 12B4A GE NOS rebranded Raytheon and RCA 1960's
1 tube) 35.0ma Gm=7000
1 tube) 37.5ma Gm=7000
Matched on Amplitrex
Vplate=140
Vgrid=-15V
Good Ma range 25-40ma
Good Gm = 6000
See more: vacuum tube
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 (Pair) 12B4A GE NOS rebranded Raytheon and RCA 1960's (35ma and 37.5ma) (same Gm)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_68f469ee-0a6e-4a24-928d-8870f7205500.jpg?v=1735865067){kind=link}
 (Pair) 12B4A GE NOS rebranded Raytheon and RCA 1960's (35ma and 37.5ma) (same Gm) "Pin It")