******* A L E R T ******* Looks like KZ has silently modified the ZS6. Pay close attention. The first image is an image from three months ago. Note that the first image shows TWO of the same exact BA (30095). The second image is also from several months ago. Note the "high pitched" balanced armature X2 in the photo. Same BA receivers. Now look at the third and most recent image. One midrange BA and one treble BA. Note that it is the same for the ZSR (1 midrange BA and 1 Treble BA). Just thought everyone should be aware that "what once was" is no more. When I get my new Pewter ZS6 I'll update the difference between my ZS6(i) and then new ZS6(ii). I also think it's cool and interesting that KZ tuned the 6mm micro-driver for the sub-bass. This explains why the sub-bass is so quick and tight on the ZS6.