Is there a way to say how much an amplifier is biased into Class A by looking at its ilde power dissipation. For example an amp like the Parasound 2205 dissipates 150W at idle. In other words it dissipates 30W/ch @ idle. Now if Class A power is only 25% efficient (suppose) then can I say that the 2205 is biased into Class A for the first 7.5 (25% of 30) watts? Would that be a reasonable assumption or, am I missing something else? Regards P.S. I am assuming that the input drivers are dissipating 10-15 W at the most so I am neglecting their consumption in my calculation.