Pathos Classic - What Can I Expect As It Breaks In?

I just got a Pathos Classic Remix from Upscale Audio. I put it into my system yesterday. It has already changed quite a bit since yesterday. I was told to give it 200 hours before making a serious assessment. 

It started out VERY bright out of the box, and very metallic.  That has largely tamed down. It sounds somewhat closed right now. The headphone amp really sounds closed in at first listen, which I believe has its own circuit (I'm using Grado 325is headphones, and they're open, quite detailed, and also bright if they're mated with the wrong amp. The headphone amp in the McIntosh MA252 was a terrible match, MUCH too bright.). 

I understand it's going to change a lot and I'll be patient. I'm just curious as to the kinds of things y'all experienced when breaking in the Classic One or Classic Remix integrateds?