The artifact is definitely not there on any of my other CDs (MoFi gold or original Atomic West Germany), it's unique to the hi-res. I came here to search why it's happening when I heard it and stumbled on to this thread: Is Universal Music Group using audible watermarks on digital files? (there are others, for example: HD TRACKS- Watermarks on some files...Beware! ) Here's more information from others who have heard it, analyzed it, and can reproduce it in a spectrum graph every time: Universal's Audible Watermark I used "Tom Sawyer" in my example because it was the easiest track for me to hear it on (unfortunately, as it's one of my favs, it's the very first Rush song I ever heard as a kid). The swishy sound is very audible in my headphones. Through loud speakers I can usually ignore it. But even if I couldn't hear it, it shouldn't be happening at all on a niche format for which I pay a premium.