Tekdredger-
Thank you very much!! This is just what I need to understand. Is there anyway to know about amp’s circuit configuration and the rail voltages and the current demands? Is it possible to know these parameters with some testing equipment? I probably need some books or experienced technician to guide me through this project. But, I think this will be a fun project. Audio is interesting isn’t it? And that’s why I love to try different things.
By the way, have you ever done this kind of project before on your own?
Thanks again.