Powering 75W per channel, the Denon AVR-S660H 5.2 channel 8K AV receiver supports Dolby TrueHD, Dolby Surround, DTS-HD Master Audio and DTS Neo:6. It features the latest HDMI specifications such as 8K/60Hz, select 4K/120Hz pass-through VRR, ALLM, HDR10+ and eARC support. With HEOS® Built-in, stream music wirelessly from Spotify®, Amazon Music HD, TIDAL, Deezer, TuneIn, Soundcloud and more. Works with Amazon Alexa, Google Assistant and Apple Siri for seamless voice control.

• High-performance amplifier: 5.2 channel 8K AV receiver with 75 per channel (8 ohms, 20Hz - 20kHz, THD 0.08%, 2 ch driven)
• Voice control: Works with Amazon Alexa, Google Assistant or Apple Siri for hands-free control of your music
• Full 8K/60Hz and select 4K/120Hz support: With the latest HDMI support, enjoy 8K quality video from your 8K source devices. Three 8K input and one output allow for 8K/60Hz and select 4K/120Hz pass-through. 8K upscaling is available on all 6 HDMI inputs.
• The latest picture/video technology available: The latest HDR format support including HDR10, HDR10+, HLG, Dolby Vision, as well as Dynamic HDR, to provide the greatest picture quality for brightness, clarity and contrast.
• The latest in gaming experiences: With 4K/120Hz pass-through, Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM) and Quick Frame Transport (QFT), enjoy your gaming experience with amazing imaging, as well as reduced lag and latency from features.
• Award-winning Denon Setup Assistant: Onscreen graphical assistant ensures an easy and intuitive setup experience
• HEOS Built-in: Wireless multi-room music streaming technology
• eARC (Enhanced Audio Return Channel) support: Allows for Dolby True HD and DTS HA Master Audio transmission directly from the TV to the AV receiver through the connected HDMI cable
• Stream the most popular music services: Enjoy Spotify, Amazone Music HD, Tidal, TuneIn, Deezer and many others — via Bluetooth, AirPlay 2 or the HEOS app
• Front panel USB input: Convenient audio playback of MP3, WAV, FLAC, ALAC and DSD (2.8/5.6MHz) files
• Four Quick Select buttons: Featured on the front panel, store your preferred audio settings for each source
• Audyssey MultEQ and Dynamic EQ/Volume: Optimize your room acoustics with Audyssey software and included mic and stand