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2 X JAN CPR 6SN7GT / VT231 TUBE. USED (TEST RESULTS SHOW USED TUBES, APPEARANCE IS AS A NOS)
BRANDS: RAYTHEON
BLACK PLATES, RECTANGULAR GETTER, COPPER RODS, ORANGE LOGO, MATCHED PAIR.
ONE OF THE TUBES HAS A CRACKED BASE, YOU CAN SEE IT ON THE LAST IMAGE. THIS DOES NOT AFFECT ITS FUNCTIONALITY.
TESTED IN ROEHRENTEST TUBE TESTER
76/87% 6.81/7.84mA EMISSION (EM) 2.44/2.54mA/V TRANSCONDUCTANCE (GM)
69/79% 6.18/7.14mA EMISSION (EM) 1.97/2.35mA/V TRANSCONDUCTANCE (GM)