THX�� Theater-Reference Sound Meets Ultra HD Entertainment Step up to THX-certified surround sound with the TX-NR737-the most potent and future-ready A/V receiver in its class. With a high- current massive transformer discrete Three-Stage Inverted Darlington Circuitry amplification and extremely robust construction this heavyweight serves up floorshaking theater-reference sound. There are 4K/60 Hz-capable HDMI�� 2.0 inputs for Ultra HD gaming and video at 60 fps as well as support for HDCP 2.2. As most Hollywood movie studios are adopting HDCP 2.2 copy protection for future Full HD and 4K releases (including content streamed via the internet) this is a highly desirable feature. Also included is Qdeo��� 4K upscaling technology so you can enjoy older DVDs and games in high resolution. Music lovers can choose from a selection of internet music services and stream almost any 192/24 hi-res lossless or compressed file format (including 5.6 MHz DSD) from compatible network- attached devices using built-in Wi-Fi��and our free remote app. Bluetooth is also built-in. Combining these features with class-leading sound quality and an easy-to-use GUI the TX-NR737 delivers powerful studio-master entertainment at an affordable price.