There are a couple of reasons I suspect it's taken this long to see a vacuum tube in a pair of headphones. Tubes are hungry ...

The idea of putting a tube in a pair of headphones does tend to bring mental images of massive lightbulb-sized tubes to mind, ...

Buddy Guy’s Legends bar was packed ... enthusiasts who actually make their own tubes from scratch. It is easy to get sound out of vacuum tube audio circuitry. Tube circuits lend themselves ...

Amplifiers that use vacuum tubes instead of – or alongside – solid-state electronics are marketed on the basis of their ...