content: This product is so inferior I almost can't believe I paid money for it. Even the slightest amount of volume in a song makes the sound dissolve into static. Trust me, I've tried every frequency, they are all garbage. The last Monster FM transmitter I had was marginally better but alas, it died. The only reason I use this is because my nearly inaudible iPod playlist is better than anything the Clear Channel has to offer and it's illegal in Massachusetts to listen to your headphones while driving.