I will try the capacitor swap with the noted capacitors that Goldfinger had noted. I haven't got this 6666 yet from Amazon but I'll give it a try. I have had great success with better audio friendly style capacitors in the past radios I have recapped for a better clean clear and smooth audio purposes. It does make a difference to my ears anyway. To those who are looking to get a more wide and full higher fidelity sound from your rigs, I have had success with rack gear and a good flat studio microphone. It sounds over the top and it is...but you will love how you sound and others you talk to will be dumbfounded on how your broadcast quality on a cb radio. All my rack gear is either used or new for less than 100$. I hook it straight into the microphone plug on the radio (everyone says it doesn't work that way). I must have good luck then. My latest radio I have it hooked up to is a Bearcat 980 with the screen all dimmed like everyone else's. On air Testing on channel 23 gave me an unsolicited report that the audio was 5 khz on both sides and sounded great. And that was on a junk radio without mods. Give it a try and you may like it. Maybe someone can tell me why this occurs, but In my mind I just think that I'm overloading the inexpensive filters and it has a good sounding benefit.