The Denon AVR-S660H is a 5.2 channel AV receiver with 8K compatibility, delivering a power output of 75 watts per channel. It features built-in HEOS technology for seamless connectivity to streaming services and devices. With support for multiple surround sound formats including DTS, DTS:X, Dolby Atmos, and Dolby Digital, this receiver provides an immersive audio experience for your home entertainment setup. Equipped with various input options such as coaxial digital, digital optical, and USB, as well as output options like RCA, HDMI, and digital optical, the Denon AVR-S660H is a versatile choice for enhancing your audio experience.