(!) (Recommended Pair) 12B4A Sylvania NOS 1970 era (26ma and 26ma)
$ 19.99
1 pair) 12B4A Sylvania NOS 1970 era same build in white boxes
1 tube) 26ma Gm=5900 rebranded GE 1971 (SE)
1 tube) 26ma Gm=6000 rebranded RCA
Matched on Amplitrex
Vplate=140V
Vgrid=-15V
Good mA range 25-40ma
Good Gm = 6000
See more: vacuum tube
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 (Recommended Pair) 12B4A Sylvania NOS 1970 era (26ma and 26ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_9de8b80d-8235-4693-91be-ca8fe0c9ab3d.jpg?v=1628309518){kind=link}
 (Recommended Pair) 12B4A Sylvania NOS 1970 era (26ma and 26ma) "Pin It")