5687WA Sylvania JAN used/tests like new 1960's (39/43ma) (high Ma and Gm)
$ 27.99
1 low noise tube) 5687WA Sylvania JAN used/tests like new 1960's
39ma Gm=11,600
43ma Gm=12,300
Recommended for
Manley
Modwright
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Ray Samuels
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Audio Thrills
Loth
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