Millimeter wave vacuum tubes, including ones like the traveling wave tube (TWT) depicted here, amplify signals by exchanging kinetic energy in the electron beam (shown as a blue line) with ...

Back to the future: LG Electronics has seemingly adopted a retro design language heading into CES. The South Korean tech giant recently debuted a new 4K smart projector that looks like an old-school ...

A new type of transistor is being developed by scientists at the NASA Ames Research Center that meshes together the best aspect of semiconductors and traditional vacuum-tube technology. This ...

Priced from $10,000, the Feliks Audio Envy Meisterwerk headphone amplifier features all analog circuitry with 300B vacuum tubes. At its core, the Envy Meisterwerk incorporates Western Electric 300B ...