6J7 RCA NOS 1963 (1.8ma)
$ 12.99
6J7 RCA NOS 1963 (NB)
1.8ma
Gm=1200
NOS mA = 2ma
NOS Gm range 1100-1200
(1620=metal 1603, special selected non-microphonic 6J7)
- Western Electric preamp
- WE 124 amps
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