The ROSE TECHNICS LIGHTYEAR Star City 5 Pro 1DD+2BA Hybrid In-Ear Monitor is a premium IEM that combines advanced technology with expert tuning. It features a hybrid driver configuration consisting of a 10mm Japanese LCP composite diaphragm dynamic driver and dual Danish balanced armature drivers, delivering exceptional clarity and detail across a wide 10Hz-25,000Hz frequency range. Tuned by ex-Sony engineers, the IEM incorporates a 4-way damping air pressure circulation system for enhanced comfort and bass response. Its CNC machined and 3D-printed cavity, along with a physical-electronic hybrid crossover, ensures optimal acoustic performance and low distortion. The Star City 5 Pro comes with a high-quality dual-strand 6N OCC monocrystalline copper cable and MMCX connectors for versatility. With an impedance of 24Ω and sensitivity of 104dB @ 1mW, this IEM offers a perfect blend of advanced audio technology, comfort, and superior sound quality for discerning listeners.