The Marantz SR-8100 is a multi-channel audio/video receiver that supports various surround sound formats. It is designed to deliver high-quality audio output and has a range of features for both audio enthusiasts and casual users. The receiver supports video formats and is equipped with multiple inputs and outputs for connecting various audio and video sources. It typically includes features such as ample power output, customizable audio settings, and compatibility with modern digital formats. Additionally, it often has a sleek design that fits well into home entertainment setups.