6DR7 Sylvania black plates NOS 1970's (1.4ma/37ma)
$ 8.99
6DR7 Sylvania black plates NOS 1970's
1.4ma Gm=1500
37ma Gm=6200
Good Triode = 1.0-1.5ma Gm=1400-1600
Good Pentode = 25-35ma Gm=5500-6000
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