HEXFET
A small video
Sorry for the quality but it shows that the amp works
Media
Simple CFA Circlotron J113 version
THD 1khz 1W 8ohm 0.000541%
THD 1khz 100W 4ohm 0.026%
Damping factor 100hz / 1khz = 8/((20.705*8)/20.656-8)= 421
Simple CFA Circlotron TO92 for voltage stage
I decrease the supply voltage on VAS to reduce dissipation to be able to use TO92
Simple current feedback like F5 or amazing circlotron (PASS)