Re: Audiophile CD Players...
As someone who's listened to a good number of audiophile CD players and DVD/Blu ray players, I've gotta say I've heard huge differences, even under blind conditions. I didn't always believe in the differences; it took someone to blind test me a long time ago with music I knew before I started looking at differences in them. After that, I became a big believer in that old Ivor Tiefenbrun quote, "If you haven't heard it, you don't have an opinion."
Once I started listening to them, what I found was interesting, to say the least: Some of the audiophile players were absolute dreck, some were amazing. But this was also my opinion of the mass market DVD/Blu ray spinners I've heard as well. I've got a Marantz $500 retail DVD/CD/SACD player that outperforms an older Nakamichi CD player that was over $2k in the late 80's. Yet my Sony SACD player (also $2k retail) handily beats them both on regular CDs--at least I and the others who've heard them compared blind and at matched levels think so, even though we were all hoping for no differences.
But I do agree on a certain point: some "Audiophile" CD players are crap, snake oil, and absolutely not worth the money. But not all of them are, just like not all low-priced, mass market players are junk either. The one trend I've definitely noticed with digital players is that, as a whole, the ones that are out now are better than similarly priced ones from even five years ago.
Regarding the measurements, etc., it's interesting to note that no one has yet mentioned digital/word clock jitter which can be measured and heard and can be a large contributor to sonic differences between different CD sources. Some folks seem less sensitive to this than others, but maybe that's down to differences in hearing. There's a couple of interesting web articles out there, one at stereophile's site on jitter (at "reference/193/jitter") and also one on how it's measured at benchmark media's site, ("appnotes-d/jittercu - dot html.")
Anyways hope this adds something useful.
-Oliver