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2 X 12AU7 TUBE. NEW OLD STOCK.
BRAND: CIFTE. 1965 LA RADIOTECHNIQUE PRODUCTION.
GREY PLATES, HALO GETTER, COPPER RODS, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
100/108% EMISSION (EM) 100/104% TRANSCONDUCTANCE (GM) 0.5/0.1mA/V GAS
102/97% EMISSION (EM) 104/100% TRANSCONDUCTANCE (GM) 0.5/0.2mA/V GAS
CH164U1