Tracewell Systems, a custom power supply manufacturer and engineering services company, builds power supplies and other electronic equipment for a variety of customers. One contract came from a major ...

There’s a mystique in audiophile circles about tube amplifiers. They can have a very nice sound which is attributed to their even-harmonic distortion, but they are often portrayed as requiring rare ...

Amplification isn’t a difficult concept. You start with a small RF or microwave signal and make it into a large one. Ideally, you wouldn’t be able to distinguish between the two signals except by ...

Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio salesman, and as a record producer. Steve reviewed audio products for CNET and worked as a freelance writer for ...

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 ...

What Is a Tube Amplifier? Tube amps are made using vacuum tubes, which were invented in 1925. Using a glass bulb akin to a light bulb, tube amps take a weak signal and amplify it several times through ...