I would first of all not claim that im a electro engineer in any way, im a guy with very often a great comon sence and do not belive in all special snake-oil parts, cables, ghosts, or any like that sorts of things.
But im always happy to try it out, but if i can not see it or hear any diffrence, and in most cases you cant, or if you can it is very often placebo, because the brain register and samples an incoming sound a slight different everytime you hear the same sound/song depending on if you are tired, have listening fatigue, because you have had an trip on your motorcycle the last hour, this can play a huge factor from time to time when you listen to your equipment, so if you one day buy a LH Lightning USB for $$$ and you are hearing a diffrence could be that you over sleept one hour and drank 2 coffes before you had the first listening on your new cable.
But not everytime i should say. I have a tuff time to hear any diffrence btw digital cables, and power cables if they are in deacent quality to begin with.
I read about a guy no names here, that had worked at Nordost Cables and he told us a story that the only way to make a power cable to sound diffrent was to make the conducters thinner and weaker on some spots along the twisty way, or make it thicker, because then the transformer was fed with a poorer or not as fluid current feed, so the sound can have some affect of this if the transformer is very poor and weak

Great or bad?
I think its better to spend that money on something else if you just want to make the sound to sound diffrent, because you cant control it in what way you want it to sound diffrent, if you are not happy with the result.
To me it like run in the woods when its pich black.
But hey! I can hear s diffrence in analog cables and when my neighbur put o their TV without sound, i just hear the high pitched sound from the cathodes in the TV, so im not complete death
I think many hifi designers incl Rob most laph their buts off very often, when they are reading about peoples poor in dept technical knowhow, where they buy small gadgets, super snake-oil cables, granit weights, sandbags, homemade elegal electrical earthing, other made up solutions or self educated theories about HiFi, and thinking this have to be good, but in most cases it have been much worser or no diffrence at all if you try to measure it, because it is very easy to trick someone when it comes to sound, its a little bit harder when it comes picture area.
This is because of the big loss of kowlage and great mass of belivers that trust the not so trustfull reviewers and many developers that see the big $$$ bucks when it is so easy to trick people like pills for instant 20 pounds of weightloss in one day and so on..
My point to this statement is that the big designers like Rob for example can by his huge kowlage and experience in testing and designing, tweak away all of the second descending factors that involes the incoming signal weaknesses, thats huge!