no, 40 Watts per channel, however you define the Watts, is 80 Watts total output from two channels converted into sound. The various peak methods of defining Watts are pretty meaningless since that peak might only be able of being maintained for a microsecond with no regard for frequency, load impedance or more importantly load reactance. RMS reflects the sustained capability of the power supply to allow the amp to go continuously loud, whereas MPMO and the various peak advertising "ruses" can virtually be invented on the spot with little regard for actuality.