Hi-Fi Sound: Our TX-100 headphones feature 50mm large-aperture drivers with rare-earth neodymium magnets to deliver an immersive sound quality. Experience deep, rich bass, clear treble and vocals, vivid mids, and artifact-free, crisp high musical notes. Noise Blocking Technology: The circumaural design of these noise-canceling headphones contours around the ears for excellent sound isolation of ambient noises. Closed ear cups reduce external interference during a commute, busy office, or loud environment.