The Sony STR-DN840 7.2-Channel 4K Wi-Fi Network Receiver features 7.0 amplified channels and two subwoofer outputs as well. It supports 1050W of total power output and it uses advanced 96 kHz / 24-bit DAC. It's equipped with Dolby and DTS high-definition surround sound decoding, as well as 10 digit dot matrix display with an on-screen graphical user interface. The receiver features six HDMI inputs and one HDMI output that support 4K and 3D pass-through, Audio Return Channel (ARC), Deep Color (36-bit) and x.v. Color. Plus, there is a standby pass-through mode and an AM/FM tuner with 30 station presets for AM and 30 for FM.
The STR-DN840 also supports network streaming from a variety of sources including music stored on your computer and online music services like Pandora, Music Unlimited, Slacker and vTuner. It supports AirPlay for wireless audio streaming from compatible Apple devices. Plus, the receiver can also stream audio via Bluetooth. You can use your iOS or Android mobile device as remote as well.
The receiver also features multiple analog audio and video inputs, a coaxial audio input and dual optical audio inputs. There is a front panel USB port as well, which you can use to connect your iPod, iPhone, iPad or USB drive. The USB port supports direct digital connection and it will even charge your device. Other features include multiple sound enhancements and Digital Cinema Auto Calibration, which includes a setup mic so you can perfectly calibrate your system to your specific room dimensions.