Well, John already reported about most of the controls in his initial post on this topic. And that certainly helped. There is one side of the device which could be thought of like the spine of a book. It has no controls and is completely covered by the leather casing. If you have the ha-2 lying on a table with that side facing you, on the left end, from closest to you to furthest away, you have a small knob which turns the device on with an audible click and adjusts volume up as you turn, like an old-fashioned radio on/off knob. Moving on that same end but away from you, you have aan imput which is for I think John said is for line out to active speakers, but is also for analog in. Not sure how that works, and I didn't pay attention, since I don't have anything for that. Then last input on that end is for your headphones. On the long side that is furthest away from you, first control on the left is a button which you can press in and shows the charge level of the device. Inaccessible, of course. That is the one thing I wish it had, a way to tell how much charge remains if you can't see the lights. Moving to the right, you have the two position bass boost switch, and then next to it moving to the right is the two position high/low gain switch. Finally, on the right end of the device, you have, from back to front, a small usb input, which is for connecting a computer or an android device, a "regular" usb for connecting Apple i-devices and finally, a 3 position slider which selects the input, a b or c, corresponding to the analog in and the two usb ports.
There are 3 small cables included with the device, a usb to lightning, one with two small usb plugs on it for the small input on the device and for a usb to go out on an android device, and finallyone for the analog. Sorry I never can remember the nomenclature, which is usb b or a or whatever, but it is obvious when you look at the cables what goes where. And there is a wall plug and a much longer cable that has a usb plut that fits into the wall charger, and the other end fits into the small usb input on the device where you would normally plug in the android or computer audio source. You are suppose to be able to charge your i-phone from this device. I'm not sure how that works. I did have my ipad plugged in last night, listenig to some music, and it was not charging, according to voice over. In any case, I don't think I'd want to use this as a charger for my mobile device and be listening to music at the same time. Maybe you can't even do that. There is documentation in print that comes with the device, but I haven't tried scanning it. It may be on the oppo website in a more or less accessible form, but I have not looked there either. Hope that helped. Probably way too long. Mary
