Direct Sound Headphones are Noise Cancelling by Passive Isolation. This means you don’t need batteries.
Specially Designed cushions act as a barrier between your ears and the outside world. While other headphones may measure their noise reduction capabilities at one specific frequency these offer true passive isolation over a wide frequency range. The Headphones include the latest in TruSound® delivering a full range of frequency response to make the listening experience full and enjoyable.
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