I have Pyle speakers w/ iPhone plugged in on my RK. The sounds is ok for low speeds (around town), but on the highway they are very distorted. It also depends on the type of music you are playing too, and it does beat silence for my commute to work and long trips. I went to put on an aftermarket fairing, but it wouldn't fit over my nacelle. Since everything was already apart and I had the Pyle’s in the garage I went ahead and put them on. The thing I don't like about them is the rheostat volume control is garbage IMO. You touch the controller to either turn it up or down and it goes from one extreme to the other if at all in volume control. It was a good thought but it doesn't work IMO. Not worth putting that part on the bike if you can adjust the volume from your iPod. Overall, am I dissatisfied with them? No, like I said better than silence.