If playing a CD/DVD, the sound quality can be reduced due to disc quality, the method of recording, the quality of the music that has been recorded, and the way the disc has been handled. Handle discs carefully. Store CDs and DVDs in their original cases or other protective cases and away from direct sunlight and dust.

The CD/DVD player scans the bottom surface of the disc. If the surface of a disc is damaged, such as cracked, broken, or scratched, the disc may not play properly or not at all. Do not touch the bottom side of a disc while handling it; this could damage the surface. Pick up discs by grasping the outer edges or the edge of the hole and the outer edge.

If the surface of a disc is soiled, take a soft, lint–free cloth or dampen a clean, soft cloth in a mild, neutral detergent solution mixed with water, and clean it. Make sure the wiping process starts from the center to the edge.