USA 5693 RED-TUBE It is a red ball. 6SJ7 highly reliable tube. This is a long-life tube. It is a long-life tube that can be used for a lifetime by ordinary people. It seems to be a low noise type.
It is a metal tube with characteristics similar to 310A etc. You can drive 300B with just one of these. It is sometimes used in place of the 310A of the 91 type amplifier.
This is a relatively popular ball, so we recommend getting it while it's still cheap.
The photo shows the Westinghouse brand.
Aligned with brand and same paint text. The brands are different, so please contact us if you would like to have them in GM.
It appears to be NOS, but since it is unknown, I will list it as a used item.
