alphaman
Formerly known as headfone
Don't think I saw the detail so...
This is what the dampers do. Keeping in mind that the bigger the damper value, the more veil comes in.
Not sure if anyone has commented on the effects of filters vs. the new Harman "target" response curve ... the filterless or gray bandwidths (above) look more like what the Harman paper suggests folks prefer (at least the panel Harman used with selected non-IEM cans)
http://www.innerfidelity.com/content/headphone-target-response-curve-research-update