Re: Single ended Class A OP stages.
Analysis of the criticality and stability of setup tends to point the other way. But if you do set it up right and maintain it, then there is a potentially smaller zone of perturbed gain.
There is the Blomley design with low-level commutation that could be developed to give very carefully controlled class B crossover, but its current-mode output lets the speaker impedance peregrinations get into the amplifier loop stability.
David
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Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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