I have personally found that speakers often sound bright and thin in stores. This can be due to lack of breakin or poor setup. It's a real shame, and it's one reason I turn more to the Internet to buy stuff used and try it out; that is, the in-store demonstrations often don't tell you what you need to know. I don't know the Dynaudio line very well - I've heard some at Stereophile shows sound nice and others as described above. I think it's hard to know what you are really dealing with until you get it home and break it in.
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