(!!) 5687 Tungsol black plates used/good "U" getter halo 1950's branded FEDERAL (28/28.5ma)
By Tube World
$ 32.99
1 tube) 5687 Tungsol black plates used/good "U" getter halo 1950's branded FEDERAL
28.0ma Gm=8500
28.5ma Gm=9900
Good used Ma range 28-32ma
Good used Gm range 9000-10,000
Recommended for
Manley
Modwright
Audio Note
Ray Samuels
Ayon
Kondo
Mastersound
Audio Thrills
Loth
See more: vacuum tube
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 5687 Tungsol black plates used/good "U" getter halo 1950's branded FEDERAL (28/28.5ma) "Pin It")