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(!) E81L=6686 Philips SQ made By Valvo, Hamburg, Germany NOS 1971 (16.6 and 17.4ma)
(!) E81L=6686 Philips SQ made By Valvo, Hamburg, Germany NOS 1971 (16.6 and 17.4ma)
$ 54.99
1 pair) E81L=6686 Philips SQ made By Valvo, Hamburg, Germany NOS 1971
1 tube) 16.6ma Gm=10,400
1 tube) 17.4ma Gm=10,400
Good mA range 15-18ma
Good Gm 10,000+
(10,000 hour Power Pentode)
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