Fuzzy Lyrics

I am new to the technical aspects audiophile world but I know what music is supposed to sounds like. I have two CD's where the vocals start to sound fuzzy. Is this the recording or something wrong in my meager system. The two CD's are recent recordings, one made earlier in 2000. At first I thought it was the recording because the first CD gets fuzzy in the exact same place of the same song. Please help.