Can Someone Explain This?

I just got my new EMC-1 24/192 about a week ago and absolutely love it. As a relative 'newbie' to this hobby, I have little experience or frame of reference in high end gear, and did not really fully understand how or why someone could describe a CD player as having an 'analog' sound. Now I do.

However, last night I experienced something that had me experimenting for hours and finally left me scratching my head in bewilderment. I was listening to one of my favorite CDs and a particularly beautiful acoustic track on it. For some reason, it didn't sound quite right. Something seemed to be "missing." After listening to this track over and over, I determined that part of the "plucking" of the guitar (specifically the higher notes) WAS missing. Just to be certain that I wasn't cracking up, I plugged in my old CD player, the Ultech (which sounded harsh and strident next to the water smooth EMC-1), and--sure enough--the information was restored.

I have not noticed the EMC-1 doing this with any other CDs, although I am obviously still getting acquainted with it.
I confess I am completely baffled with this turn of events. Does anyone have a clue what I might be experiencing or why?
Do I have a defective player? If the same CD plays perfectly on another player, the computer CD-Rom drive, and my car CD player, shouldn't it also play on the EMC-1?

I will send a box of chocolates to anyone who can help me solve this problem.:-)

Happy Valentine's Day to all.