If you have read an amplifier review or looked at the specifications for an amp, the chances are that you have come across a term such as 'Class A/B'. In fact, this is just one of a number of ...

Figure 8 Class A amplifier THD performance with quasi-comp output stage. The steps in the LF portion of the trace are measurement artifacts. Figure 9 Class A distortion performance with CFP output ...

A class A amplifier uses a transistor that is always biased on. It never saturates or switches off. This is good for linearity, but not always the best for efficiency so there are other classes ...

Class D amps are simple – just take an input, and use that to modulate a square wave with PWM. Send this PWM signal to a MOSFET or something, and you have the simplest class D amp in existence.

Digital Class D amplifiers are much more efficient (90% or more) than analog Class A/B amplifiers (about 50% efficient). As such, digital amps tend to run much cooler and therefore do not require the ...

A class A amp is not going to do more than about 20% efficiency. And that's on a downhill slope with a good tailwind.<P>The Krell amps are "sorta class A." ...

Quad's latest integrated amplifier takes stylistic inspiration from the brand's 1960s amplifiers while sporting 21st-century ...

When the company launched in 2010, the Asgard, a headphone amplifier priced at $249, was its original offering. Now it has ...

Class AB amps, like the A-S301, depend on two transistors that are on most of the time. Crossover distortion is mitigated with an efficiency of approximately 60%.

Astell&Kern has the answer: its first portable Class A amplifier, the PA10. It's designed to deliver every nuance of hi-res audio to even the most demanding headphones and in-ear monitors.