I placed a pre-order for the same reason that I did not want to leave the Apple and iOS ecosystem. However for those of us here in Singapore the launch has been delayed from end of the month to mid-November.
I see from the website that the micro (mini?) USB terminal on the AK10 looks recessed so it might not fit other cables. Is this true?
And do post more impressions, please, as you are the first person on this thread that's actually taken delivery. Thanks.
The USB terminal on the unit is recessed, so it appears that only the supplied cables will fit. Also the port does not seem to be the standard USB micro-B either (it's definitely not mini-B), but I will try my local computer arcades to see if such a connector or cable is available (USB-A to AK10). But getting such a cable that fits the recessed port may still not get the unit to work with legacy iOS devices that uses the 30-pin connector with the CCK either, as the manufacturer specifically mentions only the iPhone5 (s/C) and the iPod Touch 5G as being supported for Apple. So for example if you have an iPhone4S that runs iOS 7 or an iPad4 or older, you may still be out of luck.
Sonic impressions I'll reserve for later, as the unit is still brand new and breaking in.
But I can share some more usability impressions.
This morning I worn the unit to work on my commute. I clipped the unit to my jeans belt, slipped the iPod in my jeans pocket, and it is almost weightless. Portability is unbeatable. Also, it is very convenient to pause the music, forward/backward skip tracks, and adjust volume, without removing my iPod from the pocket, and you can just directly access the unit with buttons. In fact, all you need is just to connect up the cables and you can just hit play/pause on the unit without fiddling with the iPod's touch screen at all. This is excellent when you put your entire library on the iPod on shuffle and just let the music flow.
Since the unit is so small, the leather case will only fit belts that are not too big or thick. You can remove the small elastic band that's supplied with the case, so it is easier to slip the flap onto your belt.
P.S. I use the unit with a pair of Shure SE530 IEM. I don't hear hiss at all, and the output impedance being 1 ohm, matches well with the IEM nicely. Later I will try with my laptop and my Beyer T5p full size headphones.