[saltcured]

> As referenced in the article, a common explanation for those audible differences is that the high-resolution version of the album is sourced from a different master.

In this case, it was my brother's own 24/192 recording, down-mixed by him to CD format with the intent that it be transparent. I believe he said his software was supposed to be dithering, but this was ~25 years ago and I can't really confirm the details anymore.