[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] design adds ...

Ever heard of a power JFET? I hadn't (at least by that name) until I ran across The Power JFET Amplifier, a simple low-power DIY power amp project based around a single power JFET device. As it turns ...

Probably like most people who learned engineering after the 1970s I was never formally taught anything about vacuum tubes. They'd long since been relegated to the electronics history books. But I had ...