Electro-Harmonix EH 12BH7 12BH7A Gold Pin Amplitrex Matched Pair for Tube Amps
Tubes are matched for gm on a Amplitrex AT-1000 tester. EH GOLD PIN 12BH7A MATCHED PAIR. This is a well constructed 12BH7A, that tests and sounds excellent. They test consistently with very high gm readings.
