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RE: push-pull versus parallel output stages (Single ended)

See the notes below about transformer impedance. The P-P transformer primary has four times the impedance of the PSE transformer, so the PSE makes twice the current at half the voltage. At the output side of the transformer, you are of course correct about the PP peak current capability if you allow it to go into Class AB.

Personally, I agree with you when we look at the output side of the transformer which I think is the right way to look at it. I always like to normalize things to nondimensional parameters - resistance ratios rather than just resistances.

As for losses and inductance, both are quite complex subjects when it comes to transformer design. I would not totally agree with anything simple enough to fit in a forum post!

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