The IRIS 15th is robustly equipped with an aluminum chassis sourced from the same series as DENAFRIPS' high-end models, allowing you to enjoy a flagship-level chassis configuration at an entry-level price. It completely replaces the original steel chassis. The new enclosure is precision-machined from CNC and finished with a combination of anodization and a fine satin-brush process. This not only significantly enhances mechanical stability, vibration resistance, and thermal performance but also reveals a rich metallic luster, showcasing Denafrips' uncompromising pursuit of craftsmanship. This refined mechanical processing represents an upgrade in both visual appeal and tactile experience, while also laying a solid foundation for superior sonic stability and long-term reliability. WHAT IS A 'DDC'?