@Audioguru, can you point me to any papers, ap notes, rigorous investigations where thisUnloaded, the amplifier and capacitor will produce almost no distortion. When loaded the capacitor reduces the levels of low frequencies and when its capacitance changes with the momentary varying voltage across the capacitor then even harmonics are produced which is distortion.
Odd harmonics would be produced if the capacitor had AC only with no DC across it.
even / odd harmonic generation by the cap has been measured/observed ?
Regards, Dana.