Acoustune, founded in 2013, is a premium Japanese audio manufacturer specializing in high-end dynamic driver in-ear monitors (IEMs) and earphones, established by experienced specialists in the Japanese headphone scene who united with a common dream to create exquisite in-ear headphones combining perfect sound quality, workmanship, and finest materials. The company has developed groundbreaking proprietary technologies including the revolutionary 'Myrinx' (also known as 'Milinx') dynamic driver material—a high-performance polymer biomaterial originally developed for medical applications such as artificial skin, surgical sutures, and medical implants—alongside modular metal body construction using premium materials like titanium, beryllium, and brass. Known as the 'audiophile diamonds among earphones' in Japan, Acoustune manufactures all products with precision Japanese craftsmanship using state-of-the-art CNC milling machines, with final assembly and inspection always completed by hand to ensure the highest quality standards. Their comprehensive product portfolio spans multiple series including the Monitor Series, Master Series, and ACT Series, featuring flagship models like the HS1900X Shinogi (named after the raised ridge on Japanese swords), HS2000MKIII with interchangeable design, and innovative TWS solutions like the HSX1001, all designed to deliver the ultimate natural sound experience that transcends traditional dynamic earphone limitations through innovative engineering and meticulous Japanese manufacturing excellence.