Despite easy installation, sound pretty decent and simple operation, my comment will not be as enjoyable! Indeed, when using with the USB key, incessant rattling can be heard from the speakers, which increase or decrease depending on the volume. There is no pleasure in listening to his favorite music in these conditions! The problem regarding radio channels, is that it skips every three seconds and conversations and other music programs are chopped or permanently ... So I turn to a future branded product, more expensive but more reliable, shame!