Sorry we are worry about the quality issues so we will like to wait some days and collect the feedback from the end user in China .
I think that is wise. I have a pair of F5s, the sound quality for the price is very good. One of my hobbies is clock and watch repair so I have some high magnification and some tools to manipulate small cogs etc. The connectors on the phones themselves are not deep enough, the center connector is too wide and not round, it is split into 2 half moons so it is possible to correct its shape with a fine pointed tools, the metal may be too thin and soft to repeat too often. The outer flange conector is too slack and not deep enough, it is not split, it just has a ridge, the only solution I've found is a tiny drop and I mean tiny, (or the cables that you have in will never come out) on one side of
Loctite 270 High Strength Studlock. (it's used for making nuts vibration proof).
The remote works best with the X5iii and my old Sony experia Z (old android), but at work, it produced variable results with all other mobiles and daps but thats the joy of android everthing is different almost no two are the same. I've not tried it with and 'idevice' but all their OS are very similar. I'd drop the remote if I were you, with andriod in particular you will never win, ( you even manged the make your own R1 stop working with one of your X5iii/X7 updates).
Every one who tries them enjoys the sound for price but the minute a connection is lost and the sound cuts out you loose a customer! Rethink the depth and fit of mmcx conector, perhaps a screw lock and up the quality control!
NB I own my F5s, they are not a Fiio trial pair.[/QUOTE]
Yes, in fact, we may release a F5 se which removed the mmcx and inline control features .[/QUOTE]
Hey James, do you have news of a FiiO F9 coming to market, or that is still not here?