The Denon AVR 1908 is an audio/video receiver that was released by Denon in 2007. It is a part of Denon's AVR series and offers 7.1 channel surround sound, supporting various audio formats including Dolby Digital, DTS, and PCM. The AVR 1908 has multiple HDMI inputs, allowing for easy connectivity with other devices such as gaming consoles or Blu-ray players. It also includes features like automatic room calibration and video upscaling. However, detailed specifications and technical information are not provided in the given prompt.