(!) 448A Western Electric smooth top used/good 1965-1966 (1 pair: 19.2ma and 20.8ma) (Matched on Amplitrex)
$69.99
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1 pair) 448A Western Electric smooth top used/good 1965-1966 - reboxed 1 tube) 19.2ma Gm=25,000 1 tube) 20.8ma Gm=23,000 Amplitrex Test Data: Vplate=135V Vscreen=135V Vgrid=-2 Good Ma range 20-30ma Good Gm = 23,000 - 27,000 DIY pentode
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