I've found an article about memory distortion issues in audio analog amplifiers. Available for free here.
The author uses in the last configuration a CFP differential input with a cascode of FET controlled by the input and the feedback.
I want to use the same method on the Voltage Amplifier Stage (VAS), to provide constant power:
I used a CFP Vas with a cascoded MOSFET. Is this possibile? Is this good? Is the principle of memory distortion correct? Does what I'm doing make sense?