5x4 Fivre brown base yellow label tube ( 4 pieces ) made in Italy
full wave rectifier vacuum tubes valves
fully tested
Test results
tube 1 = 45/45
tube 2 = 45/45
tube 3 = 48/50
tube 4 = 44/40
reference good is 40/40 TV7 Tube tester military version made in U.S.A.
features: Smooth plate D getter bottom , hanging filament , Long plates , internal welded , holed plate 3 holes per plate large D getter Military version , long life tubes , Made in Italy , Brown base yellow label
tube valve lampe röhre tsf 진공관 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 valves
box 21
quad E