I guess I should add I am not a dialing for dollars guy so I don't leave my node parked on any networks we just mostly mind our own business up here in Maine. Is the audio perfect no its not. I suppose there is some compression happening somewhere. With that said I have less than a half dozen people with access to my zello channel most of them with the exception of the over the road trucker just use it as a monitor only type situation because the app itself runs good on a smartphone and it has a nice feature set. The truck driver friend likes it because he can use his blue parrot head set and a mapped ptt keeps him legal. The audio is good enough to hear. No not perfect though. His headset has some serious noise canceling and he doesn't sound half bad.