The closed-back over-ear headphones combine several innovative technologies that successfully overcome the persistent problems of closed-back headphones such as sound coloration and a limited sound image. The result: pure, natural sound reproduction without compromise. Experience the immersive acoustics of a concert hall as if you were there live - directly in your ears. Enjoy the fine details of music in public spaces such as offices or libraries without having to compromise on privacy or sound quality. The W-shaped cone made of ceramic-reinforced polymer composite material offers an increased effective piston area. Optimization with Multi-Layer Distributed Compensation (MLD) ensures uniform piston vibration over the entire frequency range, significantly improving the upper limit of high-frequency extension. The frequency bandwidth ranges from 5 to 44,500 Hz, whereby non-linear distortions are practically imperceptible.