What is the difference between a stereo receiver and an AV receiver?

A stereo receiver is designed primarily for listening to music and driving two speakers in a stereo configuration. It focuses on delivering high-quality audio performance, offering features such as equalization, phono input, and multiple analog inputs. On the other hand, an AV receiver, or audio/video receiver, is a more versatile device suitable for home theaters and multimedia setups. It not only provides high-quality audio but also serves as the central hub for video and audio sources. AV receivers support surround sound formats, offering multiple channels for immersive audio experiences. They include features like HDMI inputs/outputs, video upscaling, decoding capabilities, and often have additional connectivity options. The key distinction lies in the AV receiver's ability to handle both audio and video components, making it ideal for home theater enthusiasts seeking a fully integrated solution.