anyone from a manufacturer (or lab) from technicolor, to crest, to deluxe, to sony, to cinram, have all said there is no effect of any kind...this also includes the rings that were sold to the public.
does anyone sharpie thier CD's???
its amazing. take a wedge sharpie, and color in the outermost edge of the CD.. then color in the center flat area, and the innermost edge... when you hold the CD up to light, you should not see any coming through..... so actually before you do this, pick a track, turn it up and listen,,,,, then color in the disc, without adjuting the volume, listen again..... i get more volume, calrity and depth...... check this out!!