In this sale we offer a vintage General Electric 5U4GB/5AS4A full-wave high-vacuum rectifier radio tube.
The tube has smooth black plates.
It tested with very good emission on my Eico model 666 Dynamic Conductance tester with no shorts or leakage.
On the meter percentage scale of 0-140, with a minimum of 80, this multi-section tube tested good at 96/98.
Great amplifier tube. Not tested for sound or noise quality in any type of equipment.
PLEASE FEEL FREE TO ASK ANY QUESTIONS YOU MAY HAVE ABOUT THIS ITEM. USE THE ZOOM FEATURE TO INSPECT ALL PHOTOS CAREFULLY. READ MY FEEDBACK AND BUY WITH THE CONFIDENCE THAT YOU WILL RECEIVE PROMPT PROFESSIONAL SERVICE.