Understanding Class H Amplifiers

Class H amplifiers enhance efficiency by modulating their supply voltage in response to the audio signal, reducing power loss and heat generation.

These amplifiers utilize a rail switching technique to dynamically adjust the supply voltage between multiple levels, following the waveform's amplitude.

By minimizing the voltage drop across the output transistors, Class H amplifiers achieve power efficiencies nearing 80%, surpassing Class AB counterparts.

Class H topology is intricate, involving several components for voltage tracking and switching, making them more complex than traditional amplifier classes.

Their high efficiency and reduced heat dissipation make Class H amplifiers ideal for professional audio and public address systems.

Class H amplifiers once achieved over 90% efficiency in lab conditions, a record-breaking feat in the amplifier world.