However, it seems to be increasingly difficult to find an interference-free frequency. While I was able to enjoy a super sound quality with my former station, now consistently all frequencies are affected by noise, at least in the Ruhr area. The article itself is afflicted but for its price segment in order and only with the typical FM Transmitter problems that everyone else did too. What is the quality through the AUX input, I can not judge because it was a Christmas gift to a friend.