A very easy change that foam density. Tai, did happen notice a difference in appearance of the foam density in the tube of XBA-1 and XBA-10?
I had an EX600 with too much/too dense foam so my pair was less sparkly than the Dunu Trident while others were talking about treble that needed to settle with burn in. Removing it fixed things in that case.
Same apparently with the CX980 and 985 were the new foams are noticeably easier to see through when looking at the spares they provide.
Back to the C10, which I find quite more attractive than the XBA. I'm sure they sound better than the XBA-1 and if they come to the US, I could see myself grabbing one for the right price. Of course the green color, my preference, would likely be dropped over here in NA. :(