Summary: I have been using the K66 model for about six months now for various sound production purposes. They are semi-open, as some reviewers have already pointed out, so they are really best suited for home studio setups. These are not really meant to be used to plug into your mp3 player on the train.
Summary: I bought a set of these after reading many dubious reviews of all sorts of headphones in this price range. First of all, they are very light and comfortable, and you can wear them for hours with no problems.
Summary: The AKG K66 headphones are probably the best open-backed headphones you can get for such a low price. They are open-backed, so don't plan on using them to listen to Iron Maiden at full volume in some public place and expect to get away with it.
Summary: They don't swivel, so they can be incredibly uncomfortable. Everyone else can hear perfectly what you are listening too (that's bad.) They are pretty distorted, and the bass is about as powerful as a metronome. I was given them for free, and I am going to replace them with a pair of SONY 700s
Excerpt: The price indicates that it is not an animal! it looks like he flate to death in the media, but I think it may be useful as listening to so and so when mixing. and as one of his little brother if you put it to record a voice, he fled and shot many takes the microphone that would be good if it stays...
Summary: Lange Zeit war ich auf der Suche nach einem geeigneten Kopfhörer für meinen Mp3-Player, der alle musikalische Spektren (Rock, House, Dance, Jazz, Klassik, Hörbuch etc.) gleichermaßen abdeckt. Der AKG K66 scheint nun diese eierlegende Wollmilchsau zu sein.
Summary: Hallo, besitze die k66 seit einigen Monaten. Anfangs etwas skeptisch, dachte ich muss wieder zurückgeben oder wieder so ein "china"produkt, denkste! Bin mit der Zeit voll überzeugt was den Klang angeht.