5.2ch 8K AV Receiver, Voice Control and HEOS® Built-in
Trusted Denon performance
Designed for 4K or 8K setups, the AVR-S66OH delivers superior 3D audio home theater/gaming experiences and supports the latest HDMI specifications.
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Advanced 5-channel amplifier
Delivers maximum performance and 75W per channel to provide the classic and dynamic Denon sound experience.
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Advanced 8K HDMI video with eARC support
Three 8K inputs support the latest HDMI specifications—8K/60Hz, select 4K/120Hz pass-through, VRR, Dolby Vision™, HDR10+, and ALLM.
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Full surround sound experience
Enjoy enveloping Dolby TrueHD or DTS-HD Master Audio 5.1 surround sound from Blu-ray, streaming services and TV.
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Easy setup and operation
Once you connect your TV to the AVR-S660H, the Denon Setup Assistant walks you through the setup, step by step.
Specifications

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Technical Specifications
Multichannel Surround
DTS HD Master / DTS:X Yes / No DTS Neo:X / DTS Neural:X NEO: 6 / No Dolby TrueHD / Dolby Atmos Yes / No Dolby ProLogic II / Dolby Surround Yes / No Multichannel Stereo Yes Dialog Enhancer Yes Max Number of Processing (Preamp) Channels 5.1 Sound Enhancements
Network
HDMI
Multi-room CI
Others
Inputs Outputs
Specifications
General