Red, what you are desribing is how I desribe the differences between the M60 and M80; when the M60s are driven hard they open up and sound more like the M80s do at low volumes. Now I am intrigued as to how the M80s sound when driven hard, well, harder than I can with my 3808.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70