The aluminum alloy headphone chamber is coated with precision anodic oxidation, and sandblasted with zircon to create a sleek, non-slip, scratch-resistant and fingerprint-resistant surface. The treatment of the metal edges is not sharp, to ensure a comfortable finish for use. The third-generation balanced damping system combines uniquely designed acoustic and air channels at the front and rear of the sound chamber: a split air channel is designed at the front, and a corresponding outlet at the rear for richer and more rhythmic midrange. The entire balanced damping system optimizes tri-band performance to create even better acoustics.