An amplifier that uses switching technology to achieve high efficiency✓Bonne réponse
A low power amplifier that uses a differential amplifier for improved linearity
An amplifier that uses drift-mode FETs for high efficiency
An amplifier biased to be relatively free from distortion
Explication
In a Class D amplifier the active devices are never held part way on: they are driven fully on or fully off, and the wanted waveform is recovered by filtering the switched output. Because a switch dissipates little power in either state, efficiency is very high.