Trusted Denon performance

AVR-S660H - Refurbished

5.2ch 8K AV Receiver, Voice Control and HEOS® Built-in

Black

~~$649.00~~ $519.00

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Designed for 4K or 8K setups, the AVR-S66OH delivers superior 3D audio home theater/gaming experiences and supports the latest HDMI specifications.

Advanced 5-channel amplifier
Delivers maximum performance and 75W per channel to provide the classic and dynamic Denon sound experience.
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.
Full surround sound experience
Enjoy enveloping Dolby TrueHD or DTS-HD Master Audio 5.1 surround sound from Blu-ray, streaming services and TV.
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.

Wireless music streaming

Enjoy music services like Spotify®, Pandora®, Amazon Music HD, and more with HEOS® Built-in.

Enhanced gaming experiences

Variable Refresh Rate (VRR) and Auto Low Latency Mode (ALLM) care for amazing imaging and reduced latency.

Built-in Bluetooth, Wi-Fi

Dual-antenna transceiver for robust Bluetooth and Wi-Fi streaming even in congested environments.

Defining audio excellence

With a deep legacy of firsts and amazing sound, Denon is the defining audio company of Japan.

Specifications

4K/120Hz pass-through, Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and Quick Frame Transport (QFT) enhance your gaming experience. Works with your favorite voice services. Use your voice to control the AVR, wireless music services, and digital assistants like Siri and Alexa. High-resolution audio streaming for hi-fi enthusiasts—enjoy high-resolution file playback with FLAC, ALAC, and WAV support as well as DSD 2.8/5.6MHz. Enjoy your favorite audio through your Bluetooth headphones.Supports Bluetooth-only playback and simultaneous playback with connected speakers.

detail view back panel

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

Onboard technologies

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Dolby Audio Engineered to make the most of 5.1 Dolby Digital decoding so you get room-filling virtual surround sound whenever you want it.
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HDMI Available on all HDMI ports, enjoy 8K upscaling, as well as HDCP 2.3, letting you enjoy copy-protected content uninhibited. The AVR-S660H also adopts eARC (enhanced Audio Return Channel) to support 3D audio formats directly from your smart TV apps to your AV receiver.
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OVRC In today’s custom install environment, it’s critical for integrators to provide quick, reliable assistance and service to their clients, even after the install is complete. To support this effort, the Denon AVR-S660H AV receiver features Domotz Pro and OvrC remote system monitoring and management technology. These programs allow custom integrators to monitor the status of connected products and troubleshoot remotely from the office or on the go, radically reducing the time it takes to address the issue.
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HEOS® Built-in Enjoy your favorite music in any room of your home wirelessly with HEOS® Built-in technology. Play the same song in every room or select a different song for each connected room — the choice is yours. Also works with Amazon Alexa, Google Assistant, Apple Siri and Josh.ai to provide cutting-edge voice control and incredible sound for all your home entertainment. Connect your Denon Home speakers for a whole-home audio experience. HEOS® supports free and premium Spotify, Pandora, Amazon Music HD, TuneIn, SoundCloud, SiriusXM, TIDAL and more. (Not all music services available in all regions.)
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Roon Tested All new Denon AV receivers are now Roon Tested including the AVR-S660H. Get more out of your digital music library with searchable, surfable information about your favorite artists and songs. Find lyrics, concert dates, photos, bios, reviews and more.
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8K UHD HDMI inputs support 8K Ultra HD pass through, HDR, Dolby TrueHD, DTS-HD Master Audio and Dolby Vision (HDMI 2.1a and HDCP 2.3), plus ARC support, for an unmatched expansive entertainment experience.
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Works with Amazon Alexa Control the AVR-S660H hands-free with Amazon Alexa and your voice. Adjust the volume, skip to the next track, switch inputs for your different media players and more — “Just Ask.” Download the HEOS Home Entertainment Skill to enable Amazon Alexa voice commands for your AVR-S660H, HEOS devices and other select Denon products.
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Compatible with Dolby Vision Dolby Vision® is a stunning HDR imaging technology that brings extraordinary color, contrast, and brightness to the screen. See what you've been missing.
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Audyssey MultEQ Professional home theater audio tuning at your fingertips. The latest Denon audio/video products use the Audyssey suite of EQ software for simple, accurate set-up and calibration. With the supplied measuring microphone, Audyssey measures all the speakers in your home theater, and tunes the AV receiver to provide the smoothest, most optimal overall listening experience for your room. Audyssey Dynamic Volume and Audyssey Dynamic EQ smooth out startling jumps in volume (such as TV commercials), letting you listen at lower levels and still enjoy clear dialogue, music, sound effects and precise tonal tailoring. For the enthusiast, the Audyssey MultEQ Editor app lets you view speaker detection data to check the before-and-after results of the Audyssey calibration, making it easy to optimize individual room acoustics to personal taste.
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Spotify Stream your music directly from your Spotify account for high-quality music in your TV room.
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AirPlay 2 Use AirPlay 2 to stream Apple music wirelessly to the AV receiver, or group with other AirPlay compatible speakers to fill your home with music.
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Works with Google Assistant Start music in the HEOS app, then ask your Google Assistant to control volume, play, pause, skip tracks and more.

Online Manual

Support

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Discrete Power Amplifier	5
Audyssey	MultEQ
Audyssey Dynamic EQ / Dynamic Volume	Yes / Yes
Compressed Audio Restorer	Yes

HEOS Multiroom and Streaming	Yes
Lossy Formats: MP3 / WMA / AAC	Yes / Yes / Yes
Lossless Formats: FLAC / ALAC / WAV	Yes / Yes / Yes
DSD Audio Streaming	up to DSD5.6
FLAC HD 192/24	Yes
WAV 192/24	Yes
ALAC 192/24	Yes
Gapless playback	Yes (FLAC, WAV, ALAC, DSD)
AirPlay 2	Yes
Roon Tested	Yes
Internet Radio	TuneIn
Spotify Connect* / Tidal* / Deezer* / others *	Yes / Yes / Yes / Yes
Amazon Prime Music* / Pandora*	Yes / Yes
Compatible with Remote APP for Smart Phones	Android / iOS
Compatible with Remote APP for Tablets	Android / iOS / Amazon Kindle
Ethernet Ports	Yes
Wi-Fi	Yes
Bluetooth	Yes
Bluetooth Headphone transmission	Yes

HDMI Inputs: Back / Front	6 (3x 8K) / 0
HDCP2.3 support	Yes
HDMI Outputs: Main / Zone	1 / No
HDMI max Resolution (8k / 4k)	8k/60 - 4k/120
HDMI to HDMI Scaling	up to 8K 60/50
HDMI: 8K / 4K / CEC / eARC	Yes / Yes / Yes / Yes
HDMI: Dolby Vision / HDR 10+ / Dynamic HDR / HLG	Yes / Yes / Yes / Yes
HDMI: ALLM / QMS / QFT / VRR	Yes / Yes / Yes / Yes
HDMI pass-though in standby mode	Yes

HEOS Multiroom integrated	Yes
TV Sound grouping	Yes
Main room multichanel audio - Zone stereo downmix	Yes
Zone Audio Source: HDMI / Opt, Coax / Network, USB / Analog	No / No / No / No
Zone Audio Output: Speaker / Preout	No / No
Webbrowser Setup	Yes
IP Control / RS232 Control / Web Control / App Control	Yes / No / Yes / Yes
Remote In / Out	No / No

Voice Control - Works with Amazon Alexa	Yes
Voice Control - Google Assist / Apple Siri	Yes / Yes
Auto Speaker Setup by Microphone	Audyssey MultEQ
FL Display	1 line
Graphic User Interface - GUI	Hybrid GUI
GUI Languages	3
Setup Assistant	Yes
Quick Select Plus / Quick Select	Yes / No
Firmware Update by: Network / USB	Yes / Yes
Variable Cross Over	Yes
Optimized Bass Redirection	Yes
ECO Mode	Yes
Auto Power Off	Yes
Sleep Timer	Yes

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AVR-S660H - Refurbished

Wireless music streaming

Enhanced gaming experiences

Built-in Bluetooth, Wi-Fi