Docking station for an iphone

I've read a powered usb hub is needed with some dacs. 

I’m using a powered usb hub with the lightning adapter with an Ipad Air 2. I use a Halide dac as well as the built in dac in my integrated amp. Works very well streaming Deezer and is dead quiet. I am considering getting an ifi usb 2.0 hub to see if further improvements can be had.

What drove my interest in this was that I have a friend who streams Pandora via his iphone. As I am now helping him set up a macbook pro as a music server I will advise him to use that instead. I remain interested in the options for iphone use however. Thanks to all for this discussion.

The lightning connection coupled with a usb hub will work for an iphone as well.

One product that may be of interest is the "Shift" from Peachtree Audio. It is a portable battery powered usb dac that will also charge your phone. Apparently it was designed specifically for iphones.

http://www.peachtreeaudio.com/shift.html