Ah ok I see. I always knew you should decouple every two stages but didn't know why .
In the notes for the TDA2050 it mentions having separate grounds for the two inputs and the speaker output in case of high current. I'm guessing it is basically telling you to avoid a ground loop and to keep the grounds as far apart as poss?
In the notes for the TDA2050 it mentions having separate grounds for the two inputs and the speaker output in case of high current. I'm guessing it is basically telling you to avoid a ground loop and to keep the grounds as far apart as poss?