Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. Half a century ago, vacuum tubes were very common in audio ...

There’s a mystique among both audiophiles and musicians about vacuum technology, thus having a tube amp still carries a bit of a cachet. New ones can be bought for eye-watering prices and old ones can ...

Here’s an exercise in excess if we’ve ever seen one. While working on his undergrad at Michigan State, [Gregory] thought it would be a great idea to build an all-tube home theater system. He calls his ...