When I bought my brand new Dynaudio C1's they sounded really good right out of the box. BUT about 100 hrs. into the break-in they sounded horrible. Lack of bass - mid's got extremely forward and the highs pretty much disappeared. I wanted to cry but said to myself they have got to get better. Anyhow within 50 more hours everything started to fall into place and I felt a lot better about my purchase. In the end it did take a good 350 hrs before mine sounded as good as they get. I wasn't happy with the finish on the cabinets and as soon as they were broken in my replacement pair arrived. Much nicer cabinets but the break-in again. Not sure why but the second pair sounded horrible after 150 hrs but in the end took about 400 hrs to but right. I'm done breaking in speakers for a long long time.
