western electric WE421A (double triode popular power tube)

This is a popular double triode power tube from Western Electric.
You can make a stereo amplifier with just one.
You can make a 2A3 class amplifier because each channel can get a little less than 3W to 4W.
Also, since it is an indirectly heated tube, it is very advantageous for hams.

Although there are few balls that match the left and right, this product has been confirmed to have almost even numbers on the GM test machine by USA TV-7.

There is only 1 in stock.

It looks like NOS, but since it is unknown, it will be listed as a used item.