It’s true that [Bruce] has not entirely escaped metalwork, he’s still had to create the holes for his tubes and various ... interest in single-ended tube amplifiers here at Hackaday, as ...

You don’t need matched gold-plated tubes and special transformers wound ... It’s a conventional tube amplifier circuit in which the triode is a preamplifier for the pentode power output ...

The feature-packed reactive load box is reimagined with a smaller footprint that's ideal for the home recording enthusiast, ...