(!!) (Single) 2C51 Tungsol black plates "D" getter halo used/good 1960 era (6.4/6.6ma)
1 low noise tube) 2C51 Tungsol black plates "D" getter halo used/good 1960 era - faded printing
1 section) 9.2ma Gm=4900
1 section) 7.0ma Gm=4800
Amplitrex Test Specs:
Vplate=150V
Vgrid=-1.9V
Good Ma = 6 - 8ma
Good Gm = 5000-5500
5670 is sub for 6N3P Chinese
5670=2C51=396A=6N3P
nice detail, good bass
Recommended for
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 (Single) 2C51 Tungsol black plates "D" getter halo used/good 1960 era (6.4/6.6ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_2132e8fd-1115-467d-9c3e-679be343df36.jpg?v=1735865431){kind=link}
 (Single) 2C51 Tungsol black plates "D" getter halo used/good 1960 era (6.4/6.6ma) "Pin It")