So yes, Class D is more accurately referred to as a "switching amplifier" rather than a "digital amplifier" but things get blurred when binary quantization is involved as binary quantization is at the heart of digital too.
@fsonicsmith The on and off states of a digital word have meaning- IOW the arrangement of the bits create a word which represents a voltage. In a class D amplifier the on and off states have no such meaning. When the term 'digital' is used, its assumed to not be analog. Despite being a switching technology, a class D amplifier's functionality is entirely analog.
There's no intention to 'cut you down' or anything like that! Whenever I see anyone use the term 'digital amplifier' while referring to a class D amp, I feel its important to clarify since this is such a common misconception (or misuse of terms). If you do a search, you'll find I've done this on this site dozens of times over the last several years; please don't take it personally.
