Has anyone had any experience with the new Sony XBA line of IEM/Earbuds? I know they were released outside of the US a few months back so maybe there are some enthusiasts out there that have them and can give me some feedback. http://www.engadget.com/2011/09/18/sony-releases-xba-balanced-armature-headphones-eleven-times-ove/ I found a review of the sports line ones on PCMAG.com http://www.pcmag.com/article2/0,2817,2399957,00.asp But I'd like to hear some more experiences besides this one guy, they sound like they could be pretty good. Anyone with Balanced Armature headphone knowledge in general would be great to hear from too. I've never heard of this technology until recently even though it's been around for a few years.