Well, the LM386 is attached to the detector of my radio through a 10uf isolation capacitor. As far as having an actual radio station nearby, not really. The volume increase at output is very substantial though. I didn't measure it, but by ear I'd say it's nearly 50% louder than it is without that capacitor. It seems like more than you would expect from just a filter. I was really shocked at how much difference it made specially since most diagrams do not include this.