Have you ever read an amplifier review and encountered the terms Class A, Class A/B or Class D? We explain all.

Class D amplifiers have evolved to the point at which they are a viable alternative in most audio applications. However, because their principles of operation differ from those for linear amplifiers, ...

A class-D puts out a pulse-width modulated (PWM) signal instead of the typical class-AB amplifiers linear signal The PWM signal contains the audio signal and the PWM switching frequency plus harmonics ...

Trade offs in designing with IC and discrete component class D amplifiers including switching speeds, filtering options, and power supply considerations.

Class D is particularly attractive in portable applications because it helps extend battery life. Complete 3-W class D amplifiers are now available in packages as small as 1.5 by 1.5 mm.

Class-D audio amplifiers represent a significant advancement in modern audio engineering by utilising high-frequency pulse modulation to drive output stages with exceptional efficiency.