Car Audio Amp Troubleshooting Help

71340Duster said

I understand class D is extremely efficient, but I don't consider them a "digital" amp as that class of operation can occur with an analog or digital input. Even with the great enemy of heat and as inefficient as a class A is they still have low distortion so they're still the best for my ears.

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They are digital, because the output is pulse on and off, never in the active mode. The switching happens at high frequencies beyond hearing, and filtered. Signal processing for equalizer, noise canceling and other effects done in digital realm. Also nearly all music today stored digital format.