From HomeTheaterReview.com: "Integra has introduced two new home theater receivers, models DTR-40.5 and DTR-50.5. These are designed to provide new technologies for music enjoyment and compatibility with advanced multi-room and home automation systems.
The Integra DTR-40.5 and DTR-50.5 add several important new features for 2013. These include full support for the new Ultra HD high definition video format, the addition of TuneIn to the internet radio content list, as well as built-in Wi-Fi and Bluetooth interfaces for modern media connectivity. These two new A/V receivers are also THX Select2 Plus."