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2 X 12SL7GT ULTRON TUBE. NEW OLD STOCK.
BRAND: ULTRON
CHROME PLATES, SOLID GETTER, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
121/121% EMISSION (EM) 106/106% TRANSCONDUCTANCE (GM) 0.7/1.1mA/V GAS
121/117% EMISSION (EM) 112/112% TRANSCONDUCTANCE (GM) 0.3/0.3mA/V GAS