(!!!!) (Best Overall Pair) 6146B Sylvania and Sylvania Amperex NOS 1970's same build (111ma and 116.5ma) (close Gm)
$129.99
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1 pair) 6146B Sylvania and Sylvania Amperex NOS 1970's same build 1 tube) 111.0ma Gm=6450 Sylvania Amperex 1 tube) 116.5ma Gm=6500 Sylvania Vplate=300V Vscreen=250V Vgrid=-40 Good NOS Iplate range 80-100ma
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