Hi, I have a PreSonus Audiobox plugged into an iPad (with the apple camera connector). Each entry in the USB interface is Left and right channel.
You could add an option to interpret one channel (left or right) and mono. Garageband for iphone have this option (see link).
http://macprovid.vo.llnwd.net/o43/hub/media/1088/6685/Image_5.png
Thanks
