To allow for deeper insertion into the ear canal, Stage 3 was designed with inspiration from the Prestige headphones' casing design. The lightweight resin material was used and 3D printing was utilized to ensure that even prolonged wearing won't cause discomfort. Moreover, Stage 3 is a result of Noble Audio's integration of big data and years of experience in crafting custom in-ear monitors for musicians. This ensures a deeper, more secure fit that prevents the earphones from falling out during performances while also enhancing sound isolation.