The Denon AVR-S660H is a 5.2-channel AV receiver designed to deliver immersive home theater sound with modern connectivity and user-friendly operation. Supporting Dolby TrueHD and DTS-HD Master Audio, the AVR-S660H provides clear dialogue, dynamic surround effects, and controlled low-frequency performance. Built-in HDMI 2.1 support enables compatibility with modern gaming consoles and 4K displays, while network connectivity allows access to streaming services and multi-room audio via HEOS. With Denon’s renowned amplification quality and intuitive setup process, the AVR-S660H is an excellent choice for users seeking reliable surround sound performance in compact home entertainment systems.