I've used a LOT of radio transmitters. And this is the best of them. As with all transmitters, it's a science to find the balance of the volume on your audio device and the volume on your radio. But once you find it, this baby does it's job. And it does it well. So well in fact, you can hear it turn on. The radio will turn from a whisper of static to complete silence. I didn't expect anything less from a Monster product and I was not disappointed.