1 low noise tube) JRC-6189=12AU7WA RCA black plates “”D”” getter NOS 1957
8.6ma Gm=2000
9.0ma Gm=2100
12AU7 subsititute
5814A=12AU7 GE is also recommended
$18.00 $59.99
1 low noise tube) JRC-6189=12AU7WA RCA black plates “”D”” getter NOS 1957
8.6ma Gm=2000
9.0ma Gm=2100
12AU7 subsititute
5814A=12AU7 GE is also recommended
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