(!!!!) (Best Pair #2) EC92=6AB4 Siemens Halske NOS branded Philips 1967 (9ma and 9ma)
$ 139.99
1 pair) EC92=6AB4 Siemens Halske Germany NOS branded Philips 1967
1 tube) 9ma Gm=5100
1 tube) 9ma Gm=4700
Vplate=250V
Vgrid=-2V
Good Ma range 7.5-10ma
Good Gm 5000-6000
(low noise, balanced, nice detail and extension)
See more: vacuum tube
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 (Best Pair #2) EC92=6AB4 Siemens Halske NOS branded Philips 1967 (9ma and 9ma)&Category=vacuum tube&ImageURL=http://tubeworldexpress.com/cdn/shop/files/1_533757b6-cb96-47d9-a51c-98aec9d8a220.jpg?v=1751313229){kind=link}
 (Best Pair #2) EC92=6AB4 Siemens Halske NOS branded Philips 1967 (9ma and 9ma) "Pin It")