A Class D audio amplifier is basically a switching amplifier or PWM amplifier. There are a number of different classes of amplifiers. We will take a look at the definitions for the main ...

Burn-In Test Sometimes an even more severe test is used for thermal evaluation, called the “burn-in test”. This test applies the maximum voltage available from the sound processor at the input of the ...

To demo this, [Afrotech] used TI’s TPA3122 class d amplifier chip. It’s a pretty cheap chip for being a 15 Watt stereo amplifier, and the circuit is simple enough to build on a breadboard.

He said Class AB amps typically run at between 15 and 40 percent efficiency when playing back music, while Class D amps run at between 40 and 85 percent. And that's only part of the picture.

Amplifiers are rarely used at full volume, though. In that instance any energy not used to work the speakers becomes heat, and there lies the issue for Class A designs. Class A operation ensures that ...

In market for a powerful 200 WPC amp? ATI has you covered with two completely different technologies. We compare the AT4000 class A/B and the AT522NC Class-D amplifiers to help you decide.

The efficiency and size advantages of Class D audio amplification in battery- powered devices are well known. These advantages are now extended to amplifiers up to 500W, made ...

Consumer demand for flexible audio features and hi-fi sound from mobile phones has led to handset audio chip designers having to optimise the Class D amplifier to meet the noise and power management ...

Knowing what the Class AB label means for the Yamaha A-S301 makes it easier to determine if it's right for your sound goals. Customer reviews can help out with this as well.

The type of amp you choose can have a huge effect on sound quality, power consumption, and cost. Here's how the Yamaha A-S301 performs.