These processes, as well as providing acoustic isolation and a surface for finishes, also air-seal the interior.

这些处理在提供了隔声与用于涂刷表面的同时，也密封了内部。

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An effective acoustic seal allows for a high level of sound isolation, further reinforcing the headphones' powerful sub-bass reproduction.

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With their pressure-relieving memory foam ear pads, the X Headphones conform to each listener's unique ear shape, providing a highly effective acoustic seal.

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Slow-retention foam is used in the ear pads to create a comfortable fit that also improves passive noise cancellation by creating an acoustic seal.

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