new sophia 2 + MC , little agressive. Break-in?

I think you really need to break the speakers in. 15hrs is nowhere near enough time. I'm familiar with both speakers and while neither speaker is a personal favorite, I can't imagine the B&W's being less harsh than the Wilson (Or any other speaker, for that matter.). You just need to give them some time.

They are not harsh or bright fellows...they are revealing. Best cables to use are Transparent with Wilson speakers. I had the Mac stuff and found it veiled and slightly grey sounding...as compared to tonaly complex and colorful like some other tube gear or Class A SS. The speakers should be the starting point for tuning your system and room. What is your source??

Oh, I did'nt see that he only had 15 hours on them....
Of course you will need at leat 100 hours before you can make any serious comparisons
Keep playing them continuously and go back and listen evey 24 hours or so...

I think Wilson *is* a "more brilliant speaker in general," and it is not at all unlikely that you will continue to have this issue after "break in." (A system disc like Ayre's may speed the process.)

There's been a lot of discussion here of this issue for Wilsons in general, and the SII in particular, so you can get some guidance as to how you might take the edge of the high will still enjoying the SIIs many virtues (I believe Madfloyd had a long thread on this.)

Good luck!

John