(!!) (Best Single) EC92=6AB4 Siemens Halske Germany NOS 1971 (10.2ma)
$ 69.99
EC92 Siemens Halske Germany NOS 1971
10.2ma
Gm=5700
Tested on Amplitrex:
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 Single) EC92=6AB4 Siemens Halske Germany NOS 1971 (10.2ma) "Pin It")