I bought these cans, based on positive reviews, and, honestly, because of it´s appearance. Simply beautiful. I know it shouldn´t be that important, but of course i tested it briefly too, before i paid for it.

First, looks and comfort. As i mentioned, these phones are just beautiful, perfectly engineered, simply a joy to look at them. The earpads are extremely comfortable, soft, the leather just caresses your ears... After roughly 35-40 hours of listen, here are my thouhts. This is pure HIFI, just something what you expect from such a company like KEF. I´m using an Fiio X3, and an X3 2gen, with uncompressed FLAC, different genres, from electronic (Black Dog, The Chemical Brothers) to jazz (Brian Bromberg, Bugge Wesseltoft), rock, metal (Metallica, Bruce Springsteen, etc...), blues, acoustic, everything. Well, if you like really linear presentation, with sweet mids, lots of details, and great dymamics (i love the sound of the snare drum), and you are looking for some really comfortable cans, definitely should give these a try. Listening to Brian Bromberg´s album Wood II, you can just "feel" the music, the strings, the presence of the instruments. Such a great experience. No distortion at all, nowhere. I even tested it with full volume, high gain, with a crazy techno track (Trachno from DKaos), i could hardly keep them on my ears, but still i haven´t heard any rattle, grain, whatever. Amazing.On the other hand, if you like really deep, punchy bass, look elsewhere. KEF M500 isn´t for bassheads, I would recommend them if you are listening to mainly jazz, blues, classical,vocal music, metal or electronic isn´t something for these headphones. And, importantly, if you have some low quality, flat sounding recordings on your DAP; you´re gonna hate these phones, as they will sound flat too. Finally, about the price tag... Well, i paid 200 bucks for them, considering the sound and the looks, it was a pretty sweet deal. I´ve seen them on eBay for 300, but for that much, I´m not sure. Ohh, before i forget, i have to mention a really weird issue, originated from the design. I´m a tattoo artist, wearing a pretty big metal piercing ring in both of my ears. (Roughly 1.5 inch diameter). During walking, the rings are moving, and keep touching, scratching on the alu frame, causing a very annoying noise on lower volumes.