MATCHED TUBE (PAIR) 6L6 G FIVRE ITALY CODE FOC

NOS NIB

TV7 TEST 50 (25=100%) 6L6 G BLACK KT66

VALVE FULLY TESTED WITH TV7/U USA MILITARY GRADE TUBE TESTER

TEST RESULTS

TUBE 1= 50 (WHERE 25mA = 100%) CODE FOC

TUBE 2 = 50 (WHERE 25mA = 100%) CODE FOC

MORE THAN 100% BLACK BASE EARLY TOP PRODUCTION ~ BEST SOUND IN AUDIO AMPLIFIERS HI END

tube valve lampe röhre tsf 真空管 HAM RADIO audio hi-end hi-fi diy POWER AMPLIFIER Pre-Amplifier Preamp Pri VINTAGE stereo SE Single Ended PP Push-Pull VACUUM TUBES röhren