The Denon AVR-1911 is an audio/video receiver that was released by Denon in 2010. It offers 7.1 channel surround sound and supports various audio formats including Dolby TrueHD and DTS-HD Master Audio. The receiver has HDMI inputs and outputs for connecting various audio and video devices. It also has networking capabilities, allowing for streaming of audio content from internet radio services. The AVR-1911 is known for its good sound quality and reliable performance.