I didn't know exactly where to ask this question. Reading a review for a Krell FPB600 amp by Noel T. Keen on StereoTimes he mentioned several treatments performed on CD's before playing them which supposed to have increased the sound or tonality. These treatments included Compact Dynamics Optrix spray, Eco-3 antistatic formulation sprayed, Bedini Ultraclarifier, and green paint on the edges of CDs made an improvement. Someone Help me to understand what he was doing and how it will help on a higher end system. Just for the purpose to increase my knowledge.