VegasDude and JohnnyB, I have no trouble hearing the detector through the earphone with or without earplugs. I use the waxy type plugs that you knead with your fingers and then squish into the ear canal, when I use plugs, which is seldom. My helmet is an Arai Signet, which is a little quieter than my Shoei X9, but had could hear with that helmet too. The R1 remote audio unit has volume control and I keep it turned all the way up. As for 190 mph, I don't know about that. Never have gotten a radar signal at that speed.