This is old circuit Power amp OCL, But easy circuit and very nice. To use for play music in your home. It low cost too.
It use IC 741 or LF351(good) and Transistor x 4 (2N3055+MJ2955+BD139+BD140) and little component. Power supply volt +35V/-35V and 3A for Mono, 5A for Stereo.
Circuit Power Amp OCL by 741+2N3055+MJ2955
PCB Power Amp OCL by 741+2N3055+MJ2955
Source : pk kit circuit
