My 2nd E17 just arrived this morning from Amazon (different seller from 1st E17).
Fortunately, It is not an old batch. It has the authenticity sticker which I haven't bothered running it thru Fiio's website yet.
I want to make sure the unit charges, holds charge and operates properly first.
So far, everything is working. All input options were tested and verified to be working. The unit is charging and holding charge nicely.
I will fully charge it tonite and see how many hours it will last. Volume however seems to be lower than the 1st E17. This is kind of strange.
On the one I returned, I had gain at +6, volume at 40/60, USB input. On this new unit, volume got to go up to 50/60 to be comparable.
The vendor I bought the 2nd unit from was SMICORP. Their E17 stock is new.
Hope this help E17 owners facing the same problems I've had.