[quote name='Chienmortbb' timestamp='1501148368' post='3342792']
Class H is just the latest class to be defined. It is an improvement on Class G. Classes E and F are not useful for Audio
Audio Classes are A,B, AB, D,G and H.
The reason Class D amps switching amps but are not digital. Audio in the digital world is sampled and in Class D the audio is modulated. It is really more akin to a power modem.
[/quote]
Ah, I always thought that Class H preceded class D, based on when the the Marshall DBS series was around, but I guess not.