You can EQ up as long as you lower your preamp to accommodate for it. I've not heard the Alpha Dogs, but the transitions in the upper mids and lower treble do seem to be very smooth, albeit recessed as a whole-- at least according to the measurements. Measurements can lie though.
I haven't heard much 'vibration' with vocals on the HE-560's behalf, but only an emphasis that can bring out F and TH sometimes, and usually on hotly mastered tracks. I'm more of an instruments guy, though.
There seemed to be more of a problem in the production version of the 560s than the preorder version in that area, in other words the production version was a bit more 'livelier' in that area. The measurements do show that, as well, to a certain extent. Gonna see if Purrin can swap the pads on either model tonight to see if it's a problem with the new pads.
Edit: this is probably a better picture for EQ'ing..
Edited by TMRaven - 7/2/14 at 1:00pm