The Yamaha RX-V657 is an AV receiver that features a number of audio and visual processing capabilities. It supports surround sound formats like Dolby Digital and DTS, providing immersive audio experiences for home theaters. The device is equipped with multiple HDMI inputs, component video connections, and offers a power output of around 100 watts per channel. It also has built-in DSP programs for enhancing audio playback of various media. Additionally, the RX-V657 can be configured for bi-amping speakers for improved sound quality and has a user-friendly interface with an on-screen display for easy setup and navigation.