Goodness, when you first plug this in and hear some music, it just sounds terrible! That was quite a shock to me. But that is missing the point, it's not supposed to sound great. The manual suggests running it in for 1-3 days and so far I have run it in for about 18 hours and it has improved.
I reckon the challenge now is to understand how to use it, and the manual suggests 3 main areas to focus on.
It is clearly well made, very compact, and comes with one of the most imposing in-line power supplies ever.
Also suggest reading the review in Sound On Sound June 2010