My Matrix SC's and 4 PC's arrived yesterday. Had an issue with one of the PC's, but the other three PC's and SC's are working fine and in the system making music. First impressions cold out of the box were very promising! Martin Sexton, Ray Lamontagne, and Stevie Ray Vaughn all sounded very realistic! Highs weren't as open, detailed, or extended as I have heard on my system, but I assume they will open up over time. But the midrange was very engaging, and the midbass/bass had a nice increase in weight/heft, and overall a very dynamic sound that was working great for this kind of rock music. Looking forward to the break-in process.