Let me recap and expand on what I meant by a huge difference.
Up until recently I did all of my file listening via a Bluesound Node, which topped out at 192/24. The Node fed an original EE DAC which could not sync with the Node at any higher than 96/24. So that's what I played. I had acquired a few DSD files but had no way of playing them so the just sat on the server.
Then I upgraded to a Project DAC that could play DSD files, so one night I sat down with a laptop and searched the web for some software that would allow me to feed the DSD files to the DAC. It took a bit of work, but I was able to get something set up and play the DSDs. At the time the only USB cable I had available was a generic one that came packed with some kind of computer peripheral. But since the objective was at that point to just see of I could get the files to play I did not have an issue with using the cheap cable. It took a bit of doing but I found and configured a player and was good to go. Unfortunately the results were not too good from a sonic standpoint. The files were rather flat sounding and were not even as good as PCM files played through the DAC via the Bluesound. But I reasoned that this was because neither the play nor any of the settings on the computer were tweaked to optimize audio playback. But I figured then potential was there and I would have to work on optimizing the setup. At this point I contacted Pete and got one of his split head USB cables. I was planning to use this as part of a full makeover of the laptop playback system. Things got busy and I did not have time to fiddle with the laptop, but I figured why not insert the TWL USB cable and let it burn in so that at least it would be ready for prime time when I got around to the laptop tweaking. Upon inserting the TWL cable and firing up a DSD file I was totally blow away. The sound went from very flat consumer mass fi in nature to what I would expect to hear from a high end system in terms of resolution and soundstaging. And changing the cable was the only thing I did. It change the whole nature of the listening experience, transforming it from a situation where the music was there but not engaging enough to serve as much other than background music, to one where I was drawn in to the music and wanted to sit down and listen attentively. That is why I categorized it as a huge change.