A high-end CD player will allow a top-quality CD to sound up to it's potential. I own the Audio Aero Capitole Mark II and I was really amazed how well it revealed what is a quality CD and what is not. An example would be a box set of the Motown Collections as released on the Motown Label. I really enjoyed these CDs until I was given a box set of many of the same recordings released on Rhino. The Rhino CDs relegated the Motown CDs to my car's Cd player.
I think that a CD player of the quality that you seek will not add perfection where quality is lacking, but this is not the reason to not buy one. You will find that you will no longer be futzing with bass and treble controls as a high-end Cd player will allow the original mastering of the Cd to come through.
So, to answer your question, Yes, while a high quality Cd player will not 'fix' a recording, it will play even copies of copies of CDs to reach full potential.
I think that a CD player of the quality that you seek will not add perfection where quality is lacking, but this is not the reason to not buy one. You will find that you will no longer be futzing with bass and treble controls as a high-end Cd player will allow the original mastering of the Cd to come through.
So, to answer your question, Yes, while a high quality Cd player will not 'fix' a recording, it will play even copies of copies of CDs to reach full potential.