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1 X 12AU7 / ECC82 TUBE. NEW OLD STOCK.
BRAND: RADIOTRON. 1960s RFT PRODUCTION.
GREY PLATES, HALO GETTER, MATCHED PAIR.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
97/99% EMISSION (EM) 96/106% TRANSCONDUCTANCE (GM) 0.8/0.4mA/V GAS
95/91% EMISSION (EM) 95/95% TRANSCONDUCTANCE (GM) 0.8/0.4mA/V GAS
CH166U1