"Joe Kesselman" wrote in message
...
mc wrote:
What is meant by amplification when the signal is digital?

Multiplication by a constant?

By the way, I think I know what he has in mind... Do all the signal
switching and level adjustment with digital signals. Render to audio at the
last step, near the speakers. That way you do not risk hum or other
corruption of the signal from all the early stages of the processing.