(!!) (Single) 2C51 Tungsol black plates "O" getter halo tests like new 1960's faded printing (7.6/7.0ma)
1 low noise tube) 2C51 Tungsol black plates "O" getter halo tests like new 1960's faded printing
1 section) 7.6ma Gm=4800
1 section) 7.0ma Gm=4600
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 "O" getter halo tests like new 1960's faded printing (7.6/7.0ma) "Pin It")
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