The C12000 sounded beautiful in the system I listened to. However, my MAC system cannot compete with the Solution 331. It is not even close. The Soulution was paired with Magico A5s. I love McIntosh, but they are not in the same league. What came out of the Magicos was an eerily present performance. I read one review where the reviewer stated that the "331 produced sounds that made him turn his head and thought it was an artifact in the room." He eloquently stated what I heard, but I could not put this into my own words.
Solution is more analytical and less warm than MacIntosh. This sound may not be to your liking, but it has made me rethink what I find important in musical presentation.