I have received i5 as a part of its EU tour.       UI   I like the design and UI a lot. It is Android 4.4 based so not the latest but will do. It also has ability to download 3rd party apps (as opposed to some other Android players like Opus #2). I use 3rd party apps to sync my desktop PC (iTunes) with the players I own. It copies not only song but bi-directionally syncs metadata like ratings, play count, skip count, last play time etc. It helps to create a dynamic playlists like "often played but not rated yet" or "highly rated but played...

I received a test Caying N5 as a part of the tour, used it for a week. I will not be posting a pictures because there are plenty of them already but will try to compare Cayin to my phone and other DAPs, describe what I heard and try to rate it. Of course all my opinions and rating here are subjective and you may choose to dissagree.   I used low gain setting on the N5 as the presentation was "less in the face" which is something I generally prefer.   Other equipment / settings used: - 1964 Ears Adel A12 CIEMs (TOTL) - Denon AH-D5000 closed...