kosst, honestly, I really don't trust anything you say anymore. Now if almarg came in and corrected me, I would believe him.
I do know that Class A amps have a much larger constant A/C draw. In Class AB an amp might have an idle current of 63 watts, but if biased to something like 30 Watts Class A, the constant "idle" A/C draw may go up to something like 160-170 watts.