Since I've covered most of the normal amplifier classes i decided to dabble in some irregular circuits and I made a class AA amp. See in class AB amps one half of the output devices completely shuts down at some point. Well in class AA the output device that normally is inactive is now set to always have some idle current through it. This minimises overall THD rating and gives a THD of 0.03%@ 3W which is not bad at all.
