6EU7 GE NOS pinched gray plates 1975 (KJ)

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Tested on TV-7

(6EU7=12AX7 with non-tapped filament of 6.3V wired to pins #1 and #2 to reduce hum; claimed to be quieter than 12AX7)

Recommended for

- Echoplex

- Sherwood

- Gibson GA-5