HHB CDR74 GOLD DISCS The HHB CDR74 Gold is the first audio-optimised CDR disc, meaning it is specifically designed for use in the single-speed writers used in professional audio CD recorders. It also uses a specially formulated phthalocyanine dye recording layer which reacts much more quickly and precisely to the laser, ensuring accurate pit position and length. This dye is also much more stable than conventional cyanine discs. These factors, combined with a unique protective coating which resists abrasions, results in a secure archival lifetime in excess of 100 years. Sold in pack of 10 discs.