I've been reading and haven't found anything to suggest that frequencies this low are being used, but would it be possible with Class D to match the PWM with the PCM of the original recording? It makes sense to my little brain that making the pulse width of the amplifier to be either the same width of original A/D or a multiple thereof would be the best possible mechanism as it would mean each block that was originally created during the recording would be reproduced as a single unit by the amp.
What am I missing?
What am I missing?