Some sound systems require an external amplifier, and some do not. But how do you tell if you need an amp? Let's go through ...

There are few inventions that have been as crucial to the evolution of pop and rock music as the guitar amplifier. Indeed, many cite the 1951 Sun Records recording session of Jackie Brenston and his ...

If you're considering your audio-visual setup in any detail, you've almost certainly come across the concept of an amplifier or receiver to handle the sound. But what exactly is the difference between ...

The goal of audio amplifiers is to reproduce input audio signals at sound-producing output elements, with desired volume and power levels–faithfully, efficiently and at low distortion. Class D amps ...

Nathan Rizzuti, dedicated to Gadget Review for over 4 years, specializes in home entertainment technology and purchasing decisions. Outside of work, Nathan finds solace in playing bluegrass. With 50 ...