Premium Dali IO-8 wireless hi-fi headphones with customised Dali driver technology give you true hi-fi performance, while the advanced audiophile active noise cancellation technology allows you to enjoy the same authentic sound anywhere. The Dali IO-8 headphones are designed and engineered using the same sound principles as floorstanding speakers - they are true hi-fi speakers for your head. Switch off the outside world with unique active noise cancellation technology, carefully tuned by Dali to eliminate distractions without compromising the sound. Enjoy up to 35 hours of unrivalled noise cancelling operation. Customise the performance to suit your own style with 'Hi-Fi' and 'Bass' sound modes.