The Denon AVC-A1SR is a high-end audio/video receiver that was first introduced in 2002. It is part of Denon's flagship AVC series and is designed to deliver exceptional audio and video performance. The AVC-A1SR features advanced surround sound decoding technologies, support for multiple audio formats, extensive connectivity options, and high-quality build construction. It also supports multi-room audio system integration and has a user-friendly interface. This receiver is known for its powerful amplification and ability to drive demanding speakers. It has undergone various updates and improvements over the years to enhance its performance and capabilities.