I have put together the LM386 circuit just as described in the national semiconductor typical application page. The problem Im having is that I get a loud buzz out of the speaker. I have tried the different circuits listed on the page, replaced the IC and the POT, and caps but still get a terrible buzz. I am using a 9v battery to power. One thing I have noticed is when I touch the pot to adjust, the buzz varies also when I touch the speakers metal frame. I have google the hell out of this and could not find a similar problem. This shouldnt be so tough!