nice review!! but i still wonder how much the difference would be between the older version and this... 

@afterstory100 I wonder the difference between the two as well.
 
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I have the old version and listened v2 version. Only very slighty difference. I only noticed the treble has a little improvement. Other than that, it exactly the same like the old version
I think this new version should named v1.1 not v2