Hi dcolak,
I haven't listened to that Chris Isaak recording in quite awhile... but are you sure you are
not just hearing more of what was recorded (e.g., a subtle over-dub)? If I think about it,
I'll give it a listen again tonight.
My second thought will be more controversial, and very unlike me to normally suggest:
If you're interested in doing so, try isolating the CD player from the shelf. I'd have thought
this idea to be full of crap until I did a blind test (was supposed to be regarding cables)
where a CD player had to be lifted from the shelf to change the cables... I could reliably
tell when the CD player was held off of the shelf -before- any cables were changed.
The only engineering reason I could come up with was that coupled vibrations were
causing the transport drive servo feedback to jerk around enough that error correction
in the player was kicking in... a wild-ass-guess since I don't design the things.
At any rate, the only cost to test is time and a bored helper.
My third thought is that the whole cabinet is moving, essentially as a unit...
either poorly coupled to the floor, or on a floor that is not stiff or massive enough
to prevent such motion. This may not be the case, but just a thought...