Your Right Gary on the out put of AB1 VS AB2 and Since the plate current swing is limited to not drawing grid current one generally ops for better linearity and gain by using a high plate "Z" load in AB1 than in AB2. This also reduces output slightly. It can be accomplished on a modulator by simply unloading the final to draw less current, thereby reflecting a high Z to the modulator. It makes the audio really smooth but a lot less PEP.
John, WA5BXO
