The AVR-E400 7.1 Channel Network Home Theater Receiver from Denon provides powerful surround sound performance with advanced networking technology. Network functionality supports Internet radio services such as SiriusXM and vTuner, as well as Apple's AirPlay technology. The sophisticated video processor includes video up-conversion, along with 4K Ultra HD for the next generation of 4K Ultra HDTVs. Additionally, a simple interface provides quick-and-easy setup, so you can start enjoying your multimedia right away. Setup is simple, thanks to the on-screen graphical display, which combines large, clear text and icons, so you can easily make adjustments and settings during setup to quickly and easily optimize the AVR-E400 for your particular speaker setup and source equipment. The exclusive Denon Setup Assistant easily walks you through the whole process. The Denon easy-connect speaker connections on the rear panel are spring loaded and color-coded for quick connection, and the supplied color-coded speaker cable labels ensure correct speaker-cable hookup the very first time. The easy-to-use remote control features discrete source selection buttons that let you choose your preferred source with the touch of one button, so there's no need to toggle through all the inputs to choose your preferred source component. The UltraFocus 6000 is an in-ear canal design that creates amazing sound because of what you won't hear. And what you do. The comfortable, in-ear-canal design seals the ear minimizing outside sound, while the active noise canceling eliminates virtually all distractions from the environment around you. These noise isolating features our Dynamic Balance® driver technology, recreate an exceptional listening experience, with detail, full fidelity and deep bass for a truly life like and inspiring performance.