If you have iOS 11 installed now, the following options will still provide you with ways of enjoying your product:
Unfortunately, it will not be possible to use the following functions with iOS:
Powerful room filling Denon sound delivering renowned Denon high fidelity music playback 2-way speaker system with optimized cross-over High quality speaker Dock for iPod touch, iPhone and iPad Loudness function extends deep bass and treble performance at lower volume levels Robust dock for iPod touch, iPhone and iPad with flexible connector for long lasting dock ability Touch sensitive control buttons (illuminated) for dust free convenient operation Wired and wireless audio streaming from PC, Mac Music streaming and control across the home network from attached storage devices (NAS) AirPlay audio streaming from iOS devices or iTunes Internet radio built-in with 3 pre-sets Auxiliary input for system expansion; enjoy maximum sound quality from any external source USB port for charging and music streaming from mobile devices Free of charge Denon Cocoon App with advanced functionality for iOS and Android