dual headed usb cable

The King Rex Ucraft (blue) is the best USB I ve tested... Its pricey,  but if you wish to hear what your front end is capable of , you gotta get it....

I ve owned Cardas, and tried IFI, and Straight wire top of the line ... There is also YFS brand in Colorado that is pretty good ...

As Williewonka mention if the component has a separate power supply it may not be useful to use a dual head usb cable . I have a m2 tech YOUNG  DSD DAC with a out board power supply and m2 tech say the usb buss needs power from the usb cable makes little sense to me.