[Make your music, Superior] "SUPERIOR" is a true entry universal IEM that has been newly developed with comfort wearing and accurate music playback thanks to knowledge and technology gained from numerous custom IEM developments. It was named for delivering a clear, wide dynamic range that users hear to improve their hotel room grade and paired with Lake Superior, the largest area of the 5 great lakes. SUPERIOR is equipped with the brand's first 0.4 inch (10 mm) diameter single full range dynamic driver. Provides a wide range of playback and natural and harmonious sound throughout the entire range. SUPERIOR was designed and tuned with an emphasis on excessive characteristics (transient) to ensure accurate music playback. Diaphragm uses a composite membrane using vacuum depositing technology. Extremely high uniformity but high rigidity, high quality, light weight for beautiful smooth playback even in high frequencies. The driver part uses a unique dual coaxial magnetic circuit and dual cavity structure. Diaphragm drive magnetic circuitry is used both inside and outside of the driver to increase the magnetic flux density for a more translucent drive. And with a dual-layer cavity structure that gradually optimizes internal air pressure, it provides extremely low distortion sound simultaneously. In addition, the metal nozzles ensure accurate sound straight to your ears while maximizing the performance of dynamic drivers. Using 3D printing technology, the shell provides a lightweight and comfortable fit that qdc is known for. And the faceplate symbolizes transparent and three-dimensional sound, we incorporated mirror panels into the design to give it a stylish look. The concept model SUPERIOR connector adopts a highly compatible custom IEM 2-pin connector (0.78mm) The included cable is made of highly conductive high purity oxygen-free copper (OFC) 4 core wire covered with black PVC coating for smooth and superior handling. And it comes with its original durable carrying case for easy carrying. SUPERIOR will upgrade your daily music life by one step from listening to monitoring, live stages and games with accurate music playback