Pros: Good sound quality
Cons: Extremely poor build
My first pair was AKG K518DJ. Had them for 3 years and was very satisfied as they were cheap and did a great job. Pretty well build and good sound quality. For that reason I became a fan of AKG and bought the AKG K618DJ.
That was a disaster. After only 3 times of use, the right arm broke (cheap plastic). I taped it and then after a month the left arm broke too. Now the whole right arm collapsed. Although the sound quality is great with this pair of headphones, I found the build to be very cheap and not consistent to the name AKG.