SUCCESS!!
The alternative cable I bought ... works perfectly .... Crackling with 192khz files is GONE.
That's great. (to hear ;-)
Well done.
I didn't see that part when I was writing my post. If one edits their original post after reading someone else's follow-up post, they should make it clear that's their reaction to that. Otherwise it would make the follow-up poster look repeating what the previous poster already said.
I fail to see how the minor addition to my reply #18 made the complainant repeat the exact same suggestion that captain_paranoia already made in reply #14 (the toslink receiver may be a factor), and also what I already said in reply #1 (the optical cable may be a factor).
Also, it is a bit pedantic and off-topic to complain about such, even if it had been true.