I bought the L 1 Fidelio after laaaaaaaaaanger test phase (1 year) with many KH. In short, you just feel an elaborate piece of audio to have on the ears with an optimal compromise between the necessary construction of a high sound quality and plenty of fun Endige for mobile use. Because nothing screams, no pain in the ear, is sufficiently loud and the music is just there, a bit like the Harbeth speakers. With whom you can also spend hours listening to music loudly without you having to turn down the volume on some songs such as Heavy Metal feel every sound is there, and you forget the device. Very nicely done Philips, which I would not have expected ...