OMG, I have tried a few different cables with this and the difference is .............hardly there if at all. I have recabled many headphones and some, usually older, headphones do have a little change, this isn't one of them. The greater resistance to he stock cable will make a lower ohm cable seem brighter, but that's mostly a volume increase.
In my expericne, it's not a volume issue. It's a matter of clarity in the high lows and low mids. Where trumpets and high percussion instruments hang out. There is a muffled sound in that range on my X1's that is alleviated when I change the cable.
YMMV. Your ears may not be sensitive to that range, or your music may not be focused there.