THE STEREO 6T9
Project:
August 2004, Page 0
There’s a magic in building audio amplifiers that I’ve never found in a thousand microprocessor projects and — if that amplifier happens to glow in the dark with the soft light of vacuum tube filaments — so much the better. This project is a simple introduction to vacuum tube amplifiers.

Power Line Frequency Monitor
Project: Electronic Gadgets,
October 2006, Page 42
The frequency of the power coming into your house is 60 Hz, right? (at least it is in the US). Everybody knows that right? On a mailing list that I read regularly, there was recently a long, heated discussion about frequency stability of the AC power that's in our houses...