Have a high-quality CD Recorder Harman Kardon, when copying an original audio CD normal no difference to the source CD.
Only while playing this scrap blanks always a very loud crack and noise in the recording when the man hears letzden tracks, I've never had only this scrap ingots of TDK.
Audio CD blanks from TDK that will not come into the house will now only Philips or Maxell buy so I never had problems.
I can only advise stay away from these blanks very poor quality.