Some systems I have found mask poor quality recordings to the point they would be tolerable. However, in my experience, I have found that better quality equipment really show how poor the recording (not the music) really is. As I have upgraded, I have noticed that some CD's are just terrible to the extent that I can't listen to them anymore. However, I have also found that better quality (recording wise) cd's are absolutely wonderful sounding. You have to remember that back in the day, the cd recording equipment was touted as "perfect sound" but was really lacking. It is funny when I read so much about the tube vs solid state argument, when many times, the actual recording equipment is solid state based and multiple ICs at that with poor quality components. So yes, I have found in my experience the same as the OP. Love the music, but sometimes the recording quality really sucks and on better quality equipment, one can really hear this.
enjoy
enjoy