12AZ7 Tungsol black plates “”U”” getter halo NOS mid-1950”s
9.0ma Gm=5500
9.2ma Gm=5400
McIntosh MC275
guitar amps – sub for 12AT7 or 12AY7
$6.00 $19.99
12AZ7 Tungsol black plates “”U”” getter halo NOS mid-1950”s
9.0ma Gm=5500
9.2ma Gm=5400
McIntosh MC275
guitar amps – sub for 12AT7 or 12AY7
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