And your question would be ?
I am a bit confused .
Regarding sound quality ? Yes, it is clearer, cleaner, the sounds become more pronounced, because the transient sounds reveal itself better....the transition from notes to notes and from left to right is more pronounced, better and smoother, which results in an even more 3 dimensional appearance of the soundstage. This sound quality improvement is definitely there. Is it subtle ? Yes. Will it be worth it ? Depend on how happy you will be on spending your money
To me, the improvement is worth it. It also utilizes the best of ZX2, the second ground. It is much of an improvement that I can't let myself pairing my Im04 with stock cable anymore
Regarding the glass. I think it really is a tempered glass, with a bit of quality like more dense and more thick ? Like I said, glasses with stronger structure will have the molacule structure tighter, denser, hence the surface tensions from the water drop can hold itself better. This will results in the water drop to shrink into a ball. The more the water spread out, the less dense and thick the molacule structure of the glass. I can almost guarantee this is the glass on the ZX2. Try it, drop 1 drop of water on any tempered glass surface, and watch the water spread. Do it to your iPhone and see how the water hold itself in a better formation.
Unless somebody accidently drop their