[Simon] wrote in to tell us about a headphone tube amp that he just built. It is based on schematics at diyaudioprojects.com that were actually featured on Hackaday in the past. [Simon’s ...

Speaking of charm, we just love the amp these tubes went into ... vacuum tubes before — we even recently featured a DIY X-ray tube — but there’s something about [jdflyback]’s tubes ...

First made in 1959, this is the best-selling tube amplifier of all ... Uniquely, Dynaco sold its amplifiers in two different ...

You don’t need to be spending your spare time at the breadboard to understand how to put all this together. Inside the box there is even a tube of Goop so you can cover up all the internal circuitry ...