Brimar 6SL7 Double Triode Valve/Vacuum Tube - Tested - (#259)

A used Brimar 6SL7G preamp double triode tube in ‘very good’ working order. GM (mA/V) - 1.6. ia (mA) - 2.3. Data Book Specification. GM (mA/V) - 1.7. ia (mA) - 2.05.

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