Do you guy's agree with this? In Class A1 PP The magnetizing effects of the DC on the Iron core cancels out. Therefor there can be no DC saturation in the core of the output trans regardless of how great the average plate current may be. The incremental inductance will be higher and therefor will improve low-freq response. Large variable plate current will produce proportionate changes in the magnetic flux rather than be distorted by the saturation bend in the magnetisation curve of the iron.