7687 Sylvania NOS 1962 (sold out)

$ 0.00

7687 Sylvania NOS 1960's

6ma Gm=2100 (triode) 80-85%

10.8ma Gm=5300 (pentode) 100%

Amplitrex Test Data

Triode Good: 6-7.5ma Gm=2200-2500

Pentode Good: 8-12ma Gm=5200-5500

(low hum and microphonics, good substitute for 6GH8A in Dynaco ST-70, mu=18, Gm=5800)
(highly recommended as sub for 6GH8A or 6U8A)

- Scott 299A

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