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2 X 12SL7GT ULTRON TUBE. NEW OLD STOCK.
BRAND: ULTRON
GREY PLATES, SOLID GETTER, SMOKED GLASS, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
91/100% EMISSION (EM) 93/100% TRANSCONDUCTANCE (GM) 0.1/0.1mA/V GAS
91/95% EMISSION (EM) 93/100% TRANSCONDUCTANCE (GM) 0.1/0.1mA/V GAS