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and yet...

your NFB signal is SE.

I slightly disagree with your compare based on power.

PP is going to need two finals, so double the SE amp(pse). Not quite an apples-apples comparison. Part of the benefit to PP is more power...if you want SE for some reason, live with that limitation...:)

I think you'll find that the magnetic behaviour of a gapped signal Iron noticeable. For the amps I have built of late, this gap is delivered to its CT'd grid choke. The L vs signal magnitude plot is different. SE nearly has to do it with its OPT( even if the OPT is 'distributed', parafeed style ).

I have found it easier to build an amp that is Class A. AB makes a radically different load on the PS. In Class A the non-linearities are what presents an AC load, so a performance restriction from the PS could be considered a benefit. Now I don't tend to build a lightweight PS, even for thoroughly Class A amps, so take that as supposition.

While we are at this, who is making Class A PP for sale?
cheers,
Douglas


Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.

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