The idea has been around for 10 years marketed as AudioPrism CD Stoplight green pen & CD Blacklight luminescent green mat. The red spectra of the CD laser is cancelled by green, instead of being refracted back at the edge & across the disk, which increases jitter at the laser pick-up. I believe it works, though it doesn't increase volume. The effect is similar to jitter reduction associated with a low-jitter clock: less glare, more liquidity. I think the Blacklight, which bathes the area with green phosphors, is more effective than the pen, but recharging the mat with a light source every 20 minutes is just too dweebish.
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!!