1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates “”D”” getter halo tests used/good 1950”s no printing
8.2ma Gm=1800
8.6ma Gm=1800
$4.80 $15.99
1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates “”D”” getter halo tests used/good 1950”s no printing
8.2ma Gm=1800
8.6ma Gm=1800
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