(!) (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma)
$ 19.99
1 pair) 12B4A Sylvania NOS 1960's same build in white boxes
1 tube) 27ma Gm=5800 (red printing)
1 tube) 26ma Gm=5800 (white printing) ITT
Matched on Amplitrex
Vplate=140
Vgrid=-15V
Good Ma range 25-40ma
Good Gm = 6000
- Mapletree Ear+ Purist Headphone amp
- Mapletree Audio Design Ear+ Purist HD 2007
- Ultra-Fi linestage
- Graham Ingle, Black Cat Electronics
- Experience Music DHT
See more: vacuum tube
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 (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/products/1_6dd81519-fe54-4515-b6a9-61b3ef50d212.jpg?v=1628309224){kind=link}
 (Recommended Pair) 12B4A Sylvania NOS 1960's (26ma and 27ma) "Pin It")