@SSL443
@willowbrook
@DavidA
@sheldaze
Wow, thanks for all the comments!
My own experiences are nothing but a match for what you've all mentioned except that I don't find the HE 560 sibilant or even tiring for long sessions. Actually I'm hoping for a bit more detail and have been looking at the HD800(s). This is after watching a video from Barnacles on the HD800 specifically the part about ear ringing gun shots while gaming. I'm lucky to be at a point in my career where I can (justify) spend some moderate cash approaching high end gear.
The main worry for me is, while I don't love the aesthetic of the HE 560, I'm afraid to lose detail going to another headphone. As I mentioned before, the HD 650, HE 400i, Master and Dynamic MH 40 and the entire VMODA line seem so muffled in comparison.
So I guess the question is, what am I missing with the SchiIt Stack 2 and the HE 560 that I'll get with a better DAC/AMP or a $1k-$2k set of headphones?