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View Full Discussion For what it's worth, I found this statement across numerous sites. This one from http://www.hkmobilenews.com/new-arrival/1509241/#more-20008 and translated in Chrome.
"Dynamic Motion DM008K uses a voice coil magnet structure placed on both sides, and with a strong neodymium magnet ring, plus balanced armature characteristics, with the original design of 8mm dynamic power drive unit, through this unique design, even 8mm unit to be the effect of making 10mm unit. Feature is to provide high resolution and analytical ability to make sound more delicate nature."
and then of course there's this:
I noticed this as well when researching the DM008K (still curious about the 008K's though). The 100's are also marketed across multiple sites in the same fashion. From Amazon's site, which has no reviews (translated?) -> "Seamless band balance and tonal expression is compatible at a high level in the Balanced Armature type delicate and high resolution and dynamic driver type of Natural, to achieve an overwhelming musical experience that has not been achieved with conventional dynamic driver loading machine"
They use the word "delicate" again, which I find interesting. Also, according to what I originally posted, it seems that the 8mm drivers are enhanced to perform with 10mm efficiency, whereas the 100's are in fact actual 10mm drivers.
The BDD (Balanced Dynamic Driver) (included with DM100 and DM100E), is touted as replacing the old driver, in that it refines the existing Dynamic Driver (same one on 008K I'm assuming) to improve THD (minimize vibration, improve damping) and tighten bass response.