In today’s world, power amplifiers are used in many devices for a wide variety of applications. In general, an amplifier takes a low power input and regenerates the signal at several watts higher.

(Editor's Note: There are links to the previous parts of this series at the end, below the author's biography.) Now that we discussed some of the basic applications for an op amp (operational ...

How a paper substrate and biodegradable circuitry can be used for basic circuits. How the researchers fabricated and connected active and passive devices literally “on paper.” Details of their first, ...

I've got a pair of standard non-powered speakers. I'd like them to play whatever Chromecast Audio is playing. I assume/understand I'll need to buy an amp. Here's my question though...do I really need ...

COSTA MESA, Calif.--(BUSINESS WIRE)--Q-SYS is pleased to introduce the SPA-Q Series network amplifiers, which deliver rightsized amplification while adding audio/control I/O options to support a wide ...

There’s a hidden gem on eBay and Amazon: the Yuanjing 6N11 headphone amplifier. Out of the box it’s OK, maybe even above average. With a few modifications, it becomes a really great-sounding headphone ...

Emotiva's stereo amp isn't very big, but the Mini-X a-100 is built like a miniature tank, and sounds very decent. Ex-movie theater projectionist Steve Guttenberg has also worked as a high-end audio ...

Evaluating S-parameters and other CW stimulus responses is essential for characterising rf amplifiers. An rf vector network analyser (VNA) plays a critical role for this purpose, and proper ...