Based on KT818-KT819 and KT805 on audio source.
The amplifier has a more powerful and high-quality sound. And as there is no DC on output to acoustics. Work from 9V to 80V. Depends with selected transistors.
Also need some callibration on Various Resistors
1 Resistor after KT805 need disconnect audio source and output signal to output cascade. And calibrate to 0 betwen collector and GND.
2 and 3 Resistor with KT818/819 need disconnect emiters and capacitors then callibrate to 500 mA betwen emmiters and GND on -Vs transistor need -500mA.
