The difference is that I don't claim that the acoustical resonance of my power cord is the reason it sounds better. I freely admit I don't have a clue why it sounds better. Maybe because of the braiding reducing the influence of EMI, but maybe not, because I have not figured out a way to measure it that makes sense. Once again, I can understand wanting to use a skinny little piece of silver as the fuse material, because the general consensus is it's a good conductor - right up until when it blows. If the fuse makes something sound better, that great. If people thinks it's worth $50, that's great too, particularly for the guy who has them made for $2.50 each or whatever. But the whole resonance thing is just marketing copy without some data to back it up.