Just because Apple has ditched the headphone jack doesn't mean you have to ditch your favourite headphones. High-Performance DAC Chip Within the i1 is a high quality chip with both a DAC and a headphone amplifier. Not only does this chip support lossless audio formats, as well as achieve a high signal-to-noise ratio and low distortion, it also supports high-definition voice calls to give you crystal-clear conversations anytime, anywhere. (The i1 currently only supports up to lossless 48kHz audio due to the Lightning Audio Module (LAM) - this may change to up to 192kHz pending changes to the LAM.) High-quality Microphone that Clearly Captures Your Voice Built into the i1 is a high-sensitivity microphone that ensures your voice is clearly heard during calls and recordings - no more miserable conversations due to poor voice quality. 
A Dedicated Companion App at Your Service FiiO has a team specifically dedicated to maintaining a dedicated iOS app for the i1, for fast and convenient firmware upgrades in the future. Supported Devices iPhone 7 Plus/iPhone 7/iPhone SE/ iPhone 6s Plus/iPhone 6s/iPhone 6 Plus/iPhone 6/iPhone 5s/iPhone 5c/iPhone 5 iPad Pro (9.7-inch)/ iPad Pro (12.9-inch)/iPad Air 2/iPad Air/ iPad (4th generation)/iPad mini 4/iPad mini 3/iPad mini 2/ iPad mini iPod touch (6th generation)/ iPod touch (5th generation)/iPod nano (7th generation)