The Emotiva UPA-2 Stereo Amplifier is an incredible solution to turn a $500 AV receiver into a real powerhouse - and for FAR less money than it would cost to buy a comparable quality flagship product.

The $1,699 Schiit Audio Ragnarok 2 Integrated Amplifier plays in the sandbox with some heavy hitters. Does its headphone amplifier make it better? Integrated Amplifiers have become a huge segment ...

So you've decided that you'd like to pick up a headphone amplifier. Like many things in the world of audio, deciding which to buy can be a rabbit hole of different designs, types, and price points. We ...

Anthem's new MCA 225/325/525 multi-ch amplifiers boast up to 600 watts/ch power and low noise starting at $2k but are there caveats? Read on to find out. MCA 525 GEN2 Power Amplifier 5-channel power ...

There is something incredibly freeing about a small portable amplifier that can also be battery-powered. Under the Roland moniker, the CUBE Street amp was first released way back in 2007. The entire ...

We earn commissions from purchases you make using links in our articles. Learn more. For many car owners, the stock stereo just won't cut it and thankfully there are plenty of cost-efficient ways to ...

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 ...

Operational amplifiers (commonly called op amps) are a ubiquitous building block for designing electronic circuits. Today, these devices are fabricated as small integrated circuits, but the concept ...

In Part 1, I discussed the background behind lock-in amplifiers. Here, I’ll cover analog and digital lock-in amplifiers, software-defined radio, de-embedding, and the hardware and software ...