Since I have had them for a while, I can say that they are a real pleasure, every day, every week, every month. I just don't get tired of them. I can use words like balanced, neutral, spacious, detailed, but those really don't distinguish them enough. They are all of that, but they are totally non-fatiguing. I can listen to them for hours on end, and still want to hear more. I am driving them with the Blue Hawaii Special Edition, which only adds to the delicious experience of these headphones. When I listen to well recorded and mastered DSD files...

Purchased new from Definitive Audio in Seattle.  Have been through many cans since then, but have kept the DT-911s for listening to Television after my wife has gone to bed.  The are so comfortable that I forget that I am wearing them.  Great for TV audio, but not up to my other headphones for music.

Well, I have tried all of the great headphones over the last few years (Stax, Sennheiser, Grado, AKG, Audeze, Beyer Dynamic, etc.) and I have returned to my all-time favorite K1000s with Stefan Audio Arts Equinox cabling - driven by a Macintosh C2200 tube preamplifier and a First Watt F1 amplifier.   What brings me back is the incredible soundstage, the imaging and the transparency of the sound.   I no longer listen to the system - I listen to the music.    What more could I ask.  I am re-listening to my entire music collection with such appreciation...