The test measurements here mention that for the D50s, the ESS hump has been eliminated. I did not see a comparable measurement or comment for the D10. Does that mean the D10 has the ESS hump? I notice a brightness or sibilance with the D10 in some mid-range with several cans, even on a warm voice such as Cesaria Evora's. Could this be the result of the ESS hump? Also my cans are pretty new. Might this smooth out as they become burned in?