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1 pair) 448A Western Electric "tipped top" used/tests like new D getter halo 1965 in white boxes
1 tube) 26.4ma Gm=26,900
1 tube) 26.8ma Gm=25,500
Amplitrex Test Data:
Vplate=135V
Vscreen=135V
Vgrid=-2.5V
Good Ma range 18-25ma
Good Gm = 25,000
DIY pentode
Ships within 48 hours · Estimated delivery Jun 23 - Jun 28
US$40
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