Talking to a friend with a Talon and he asked why I had my personal MP3 plugged into stero. The input is for a CD player or actually anything with a line out but it also works fine with your headphone jack and a dual male connector. Line out signal is not controlled by volume control so for this setup just start with it turned down and find a good level. Cheap and easy way to get MP3 capability for a stock stereo with eq.