inputs.text: best market - seehemed boil choice unit nuforce line adapter connection iphone4 fiio e7 headphone amp neither perfect solution usage like carry iphone4 fiio e7 pants pockets listen music stuff not disturb anyone volume pros top quality throughout locks place iphone accepts without iphone warning message accompanies connection nuforce unit cons puts bending force docking connector iphone connected carrying phone pants pocket extends end iphone would prefer thus resulting bending force mentioned personally would like made one 2 foot cable iphone one pocket fiio e7 pocket perfect length connect phone amp \\rubber band\\ since nuforce unit not lock place not like warning message like carry pants pocket fiio e3 unit seehemed choice hope connector iphone not damaged time result way carry