1 low noise tube) 12AU7 RCA tall black plates “”D”” getter used/good 1950”s
9.8ma Gm=1700
8.2ma Gm=1800
Good Ma range 8-10ma
Good Gm range 1800-2200
$9.00 $29.99
1 low noise tube) 12AU7 RCA tall black plates “”D”” getter used/good 1950”s
9.8ma Gm=1700
8.2ma Gm=1800
Good Ma range 8-10ma
Good Gm range 1800-2200
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