The Tesla factory
in Czechoslovakia was one of the oldest factories in the world,
producing vacuum tubes since the mid 1920s. In 1994, after relocating
Tesla factory equipment and many of its experienced engineers to the
Slovak Republic, JJ Electronic began development and production of
vacuum tubes. Since that time, JJ has successfully introduced many
tube types into production and today produces more tube types than
any other factory. All these products have been safety certified for
use around the world and are well known throughout. We carefully
match these tubes ourselves; they can be purchased as pairs, quads
and in some types as sextets.