With the wealth of cheap and highly integrated audio amplifier modules on the market ... Especially when those parts include vacuum tubes, and doubly so when you make the vacuum tubes from scratch ...

For the electronics enthusiast a tube audio amplifier makes for an interesting ... We more often see these amps using the cheaper integrated triode-pentode tubes which makes them especially ...

Amplifiers that use vacuum tubes instead of – or alongside – solid-state electronics are marketed on the basis of their warmer, more inviting sound. Now Écoute has come up with a very unusual way to ...

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