Fantastic. Sound is excellent, as I have a large library of classical music in high resolution (96kHz, 24 bit) and the DT900 has an enormous range. I use it only when I am alone and there is no noise inside and outside the room, otherwise I use my amplifier with BW DM6 loudspeakers that also gives the large frequency range. And yes, for classical music, the expectations are not the same as for ot