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2 X ECC83 / 12AX7 TUBE. NEW OLD STOCK.
BRAND: MULLARD. 1960s PRODUCTION.
GREY PLATES, HALO GETTER, MATCHED PAIR.
TESTED IN ROEHRENTEST TUBE TESTER:
125/117% 1.497/1.407mA EMISSION (EM) 1.93/1.85mA/V TRANSCONDUCTANCE (GM)
118/113% 1.414/1.354mA EMISSION (EM) 1.93/1.89mA/V TRANSCONDUCTANCE (GM)
CH164U1