1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates “”D”” getter halo tests like new 1950”s
black sharpie mark over “”JRC-12AU7″”
9.6ma Gm=2000
10.4ma Gm=2100
$3.90 $12.99
1 slightly microphonic tube) JRC-12AU7 RCA tall black ribbed plates “”D”” getter halo tests like new 1950”s
black sharpie mark over “”JRC-12AU7″”
9.6ma Gm=2000
10.4ma Gm=2100
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