NOS-5931

If you want a 5U4GB that will take a beating and likely outlive you, then this your tube. These are built like the world-famous Bendix Red Banks tubes and are immediately discernible from normal 5U4GB variants. With Brown bases, triple micas, D getters and very heavy construction, our stock is all made in March 1957 - back when a tube *had* to work or lives were lost.