For the electronics enthusiast a tube audio amplifier makes for an interesting and unusual project, and for that reason it’s one tackled by many. [Keri Szafir] is no exception, and she’s ...

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 ...

When it comes to listening on the best headphones, many hi-fi fans swear by the power of tubes. Amplifiers that use vacuum tubes instead of – or alongside – solid-state electronics are ...