Power Amplifier Class A by Transistor
This is simple Power Amplifier Class A circuit. I used main part electronic is transistor only.
The main power transistor i used TIP41 or TIP31 or C1061 or MJE3055 and next part is TIP42 (PNP) or TIP32 or A761.
It is have power output 20W at 8ohm. and used volte of supply 22V to 28V at 4A.
Detail more please read in image.