, is widely considered a definitive tool for audiophiles to set up, fine-tune, and "break in" high-end audio systems. This collaboration between Roger Skoff of XLO Electric and audio guru "Prof." Keith O. Johnson

: This special edition utilizes a 24-karat gold reflective layer, chosen by collectors to prevent the oxidation (pinholing) that can affect standard aluminum discs over time, ensuring long-term data integrity. HDCD Encoding : The disc is encoded with High Definition Compatible Digital (HDCD)