Looking for a classic vintage power amplifier? The Dynaco ST 70 needs to be on your radar if you crave that classic EL34 tube sound. Not all vintage buys are wins. I hate to burst that bubble with ...

[Justin] had been trying to find a good tube amp for years, but all the best examples were either expensive or a complete basket case. Instead of buying a vintage stereo tube amp, he decided to build ...

If you are under a certain age, you might not know the initialism VTVM. It stands for vacuum tube voltmeter. At first glance, you might just think that was shorthand for “old voltmeter” but, in fact, ...

This file type includes high resolution graphics and schematics when applicable. Whenever I mention to folks that I used to work at Heathkit, a few people actually ask, “What’s Heathkit?” Yes, I ...

I was sad to learn in early May that the venerable company Heathkit had closed its doors. I'll bet there are tens of thousands of Broadcast Engineering readers who cut their technology teeth on ...

Most veteran electronics hobbyists remember the name Heathkit as the company that taught them the fundamentals of electronics, through kits that contained all the parts and clear, illustrated ...

Whatever happened to Heathkit, the do-it-yourself electronics kits that used to be so popular at the dawn of the computer age? For decades, Heathkit was a household name among those who liked to play ...

I recently posted on some cool vintage Heathkit finds on eBay. Soon after, the below email arrived in my inbox. It’s from an engineer (and nice guy) in need of help locating someone who does Heathkit ...

Most hams and EEs of a certain age remember fondly their first Heathkit. Everybody had at least one Heathkit. For hams, their products made it possible to get on the air with a decent-performing radio ...

For those of you who do not know or remember, Heath Company was the largest kit company in the world. Heath designed and put practically every type of electronic product into kit form. Its products, ...