1-on-1 Comparison

Side-by-Side Comparison

Denon AVC-S660H (UK version)

SCORE:
79

Highlights

  • 5.2 channels
  • 5.1 channel processing
  • 75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • HDMI 2.1
  • HDR10, HDR10+, Dolby Vision, 8K Upscaling, 8K Passthrough
  • AirPlay 2, DLNA, HEOS
  • Ethernet, Wi-Fi, Bluetooth
  • USB and Phono inputs

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Content

Overview

Denon AVC-S660H was introduced in 2021. It is equipped with 5 channel amplifier with 75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It passes 8K/60Hz and 4K/120Hz and upscales from 1080p and 4K up to 8K 50/60Hz and 4K 50/60Hz video signal.

We evaluated the a/v amplifier and gave 79 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

AMPLIFIER
85
VIDEO FEATURES
99
AUDIO FEATURES
65
CONNECTIVITY
85
MULTIZONE
55
MISCELLANEOUS
61
RADIO
82
OVERALL
79

Pros and Cons

In this section we present pros and cons of Denon AVC-S660H.

PROS
  Auto Speaker Calibration System with Mic.
  HDMI 2.1
  eARC
  New HDCP Version
  HDR10
  HDR10+
  Dolby Vision
  Auto Low Latency Mode Pass-through
  VRR
  QFT
  4K or 8K Video Passthrough
  4K or 8K Signal Upscaling
  HEOS
  Works with Amazon Alexa
  Google assistant
  Ethernet
  Wi-Fi
  Bluetooth
  Many 8K Inputs
  USB Input
  Phono Input
  Composite Video Inputs
  Zones
  Spotify
  Tidal
  New Bluetooth Version
CONS
  No Front Wide Channel Support
  5.1 Channel Processing
  No Dolby Atmos
  No Dolby Atmos Height Virtualization
  No DTS:X
  No IMAX Enhanced
  No Auro 3D with Auro-Matic Upmixer
  No DSD via HDMI
  No Chromecast Built-In
  Few HDMI Outputs
  Few Analog Audio Line Inputs
  No Analog Pre-Outs
  No Analog Tuner
  No Pandora

Predecessor

Here we are comparing Denon AVC-S660H to its predecessor AVR-S650H and displaying the major changes.

UPGRADES Denon AVC-S660H vs Denon AVR-S650H
HDR10+ vs
Dynamic HDR vs
QMS vs
VRR vs
QFT vs
Video Signal Passthrough up to 8K 50/60Hz (YCbCr 4:2:0/8-bit) and 4K 100/120Hz (RGB/YCbCr 4:4:4/8, 10-bit and YCbCr 4:2:2/12-bit) vs up to 4K 50/60Hz 4:4:4
Video Signal Upscaling from 1080p and 4K up to 8K 50/60Hz and 4K 50/60Hz vs
More HDMI Inputs 6 vs 5
More 8K Inputs 3 vs
Wi-Fi Standard IEEE 802.11 a/b/g/n/ac vs IEEE 802.11 a/b/g/n
Newer Bluetooth Version 4․2 vs 3․0 + EDR

DOWNGRADES Denon AVC-S660H vs Denon AVR-S650H
Analog Tuner vs FM/AM with RDS

For more detailed comparison between the models please visit Denon AVC-S660H vs Denon AVR-S650H.

Audio Section

5 channel Amplifier

Denon AVC-S660H features 5 channel power amplifier. It is rated at 75 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

    Speaker Configurations

    Denon AVC-S660H's 5 channel amplifier can be assigned for different speaker configurations.

    • Configurations: Available configurations are:
    • 5.2 with internal amplifier.

    Enhanced Audio Return Channel (eARC)

    Audio Return Channel (ARC) feature allows the compatible TV to send audio signal to the a/v amplifier through the same HDMI cable which is used to send audio and video signals to the TV. So one HDMI cable is used to transfer audio signal in both directions. New Enhanced ARC will support uncompressed audio formats such as Dolby Atmos, DTS:X, Dolby TrueHD and DTS HD Master Audio whereas the previous ARC could support only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.


    Sound Processing

    • Audyssey: Denon AVC-S660H comes with Audyssey Dynamic EQ and Dynamic Volume.
    • Dynamic EQ: selects the best possible frequency response and surround volume levels moment-by-moment. This ensures that the bass response, tonal balance and surround impression remain constant despite changes in volume. This is the first technology that carefully combines information from incoming source levels with actual output sound levels in the room, a pre-requisite for delivering a dynamic volume solution.
    • Dynamic Volume: Your Listening experience can be greatly diminished when there are significant shifts in volume between television programs, commercials and within the program material itself. When this happens you must constantly adjust the volume to maintain your desired listening level. Audyssey Dynamic Volume monitors the volume of program material moment-by-moment and automatically adjusts it, maintaining the desired listening level for all content while optimizing the dynamic range to preserve impact.

    Room Calibration

    Denon AVC-S660H comes with Audyssey MultEQ room correction system and includes the calibration microphone.

    • Audyssey Room Calibration: Audyssey is an acoustic measurement technology which automatically restores the acoustic distortion caused by the acoustic behaviour of a room with only a push on a button. Audyssey equalization provides an clear, accurate, natural sound with voices and dialog that become focused and intelligible, restoring the musical balance. Musical instruments and sound effects become precisely localized and the surround soundstage is made seamless and enveloping.

    Video Section

    HDMI 2.1

    Denon AVC-S660H features 3 HDMI 2.1 inputs with 8K support and 3 inputs with 4K support. It has 1 output.

    • 8K/60Hz and 4K/120Hz Passthrough: 3 out of 6 inputs pass up to 8K 50/60Hz (YCbCr 4:2:0/8-bit) and 4K 100/120Hz (RGB/YCbCr 4:4:4/8, 10-bit and YCbCr 4:2:2/12-bit) and the rest of the inputs pass up to 4K 50/60Hz 4:4:4 video signal.
    • 8K Upscaling: Denon AVC-S660H can upscale from 1080p and 4K up to 8K 50/60Hz and 4K 50/60Hz from HDMI sources.
    • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35%.
    • HDCP 2.3 Copy Protection: All inputs and outputs are HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
    • Quick Media Switching (QMS): With HDMI 2.1a, Quick Media Switching for movies and video uses the HDMI VRR mechanism to eliminate the blackout period when an HDMI Source device switches its video mode. As long as the resolution remains the same and only the frame rate changes, QMS will instantly switch between frame rates. QMS eliminates A/V blackouts by using VRR technology to change frame rates, allowing instant changes from 24Hz to 60Hz frame rate, and anywhere in-between. The viewer never sees blank screens and gets a seamless experience.
    • 3D Ready: Denon AVC-S660H is able to pass 3D video through HDMI.

    HDR (High Dynamic Range)

    Denon AVC-S660H supports HDR (high dynamic range) video formats such as HDR10, HDR10+, Dolby Vision, Dynamic HDR and Hybrid Log-Gamma. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.

    • HDR10: HDR10 uses the wide-gamut Rec. 2020 color space. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 supports 10-bit color which corresponds to 1024 shades of the primary RGB colors. It is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits.
    • HDR10+: HDR10+ is an HDR video technology that adds dynamic metadata to HDR10 source files. The dynamic metadata are used to adjust brightness levels on a scene-by-scene or even frame-by-frame basis. HDR10+ supports maximum of 10,000 nits peak brightness and 10-bit or more (up to 16-bit) color bit depth. It uses Samsung's dynamic metadata defined in SMPTE ST 2094-40.
    • Dolby Vision: Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. It covers content creation, distribution, and playback. Like HDR10+, it includes dynamic metadata that are used to adjust and optimize each frame of the HDR video to the consumer display's capabilities in a way specified by the content creator. Dolby Vision allows for a maximum resolution of 8K up to 12-bit color depth, maximum peak brightness of 10,000 nits and a color gamut up to Rec. 2020. It uses Dolby's proprietary dynamic metadata defined in SMPTE ST 2094-10.
    • Dynamic HDR: Dynamic HDR enables a noticeable progression in overall video image quality from SDR to static HDR, and now static HDR to dynamic HDR. Dynamic HDR support ensures every moment of a video is displayed at its ideal values for depth, detail, brightness, contrast, and wider color gamuts - on a scene-by-scene or even a frame-by-frame basis. HDR-enhanced content is available for movies, videos, TV shows, video and PC games and VR.
    • Hybrid Log-Gamma (HLG): The Hybrid Log-Gamma (HLG) is a transfer function developed mainly for HDR live video feed and over-the-air broadcasts. It is an HDR format that uses BT.2020 color primaries and a bitdepth of 10-bit. It is backward compatible with the transfer function of SDR and is designed to be better-suited for television broadcasting, where the metadata required for other HDR formats is not backward compatible with non-HDR displays. HLG defines a non-linear optical-electro transfer function, in which the lower half of the signal values use a gamma curve and the upper half of the signal values use a logarithmic curve.

    Gaming Features

    Denon AVC-S660H supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.

    • Auto Low Latency Mode (ALLM): Auto Low Latency Mode enables the ideal latency setting to automatically be set allowing for smooth, lag-free and uninterrupted viewing and interactivity. When the receiver detects a gaming signal it will enter ALLM. The signal will also be sent to the TV causing it to automatically switch to a low-latency, low-lag mode for gaming. Some functions will not be available on the receiver and TV during ALLM.
    • Variable Refresh Rate (VRR): VRR enables a gaming source such as a console or computer to deliver video frames as fast as it can, which in many cases is slower than the normal static refresh rate. It allows the TV to adapt to certain frame rate which reduces or eliminates lag, judder and frame tearing for more fluid and better detailed gameplay.
    • Quick Frame Transport (QFT): QFT reduces latency for smoother no-lag gaming, and real-time interactive virtual reality. It transports each frame at a higher rate to decrease display latency, which is the amount of time between a frame being ready for transport in the GPU and that frame being completely displayed.

    Inputs and Outputs

    Audio

    • Phono Input: There is an MM phono input with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the a/v amplifier.
    • Analog Line Inputs: There are 2 line inputs for analog audio connection.
    • Digital Inputs: 2 optical inputs are available for digital audio connection.
    • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.

    Video

    • HDMI:
    • Inputs: 6   Outputs: 1
      8K Inputs: 3
    • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
    • Inputs: 2   Outputs: 1
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    Specifications

    Here we list all the available features and specifications of Denon AVC-S660H.

    BASICS
    BrandDenon
    ModelAVC-S660H
    TypeA/V Amplifier
    CountryUK
    Release Year2021
    AMPLIFIER
    Channels5.2
    Front Wide Channel Support
    Discrete Amplification
    THX™ Certification
    Continuous 6 Ω Rated
    Certified 4 Ω Performance
    Mono Block Power Amplifier Construction
    Bi-amp Capability
    AUDIO
    Maximum Channel Processing5.1
    D.D.S.C. HD Digital
    Alpha Processing
    Air Studios Monitor Certification
    Dolby Atmos
    Dolby Atmos Height Virtualization
    Dolby Atmos Music
    Dolby TrueHD
    Dolby Digital Plus
    Dolby Surround Upmixer
    Dolby Pro Logic PLII
    Dolby Digital EX
    Surround EX
    DTS:X
    DTS Neural:X
    DTS Virtual:X
    DTS Neo Neo:6
    DTS-HD Master Audio
    DTS-HD High Resolution Audio
    DTS 96/24
    DTS Express
    DTS-ES
    IMAX Enhanced
    Auro 3D with Auro-Matic Upmixer
    PCM 2-ch/Multi-ch Input
    Music Playback via USBMP3, WMA, AAC, Apple Lossless, WAV, FLAC, DSD
    High Resolution Music Playback via USB and/or Network up to 192 kHz
    High Resolution Audio Formats via USBApple Lossless, WAV, FLAC, DSD
    Multi-Channel Music File Playback via USB
    Gapless Playback
    DSD via HDMI
    DSD via USB 2-ch Input
    DSD to PCM Converter
    USB DAC
    Jitter Reduction
    DTS Dialog Control
    Dialog Enhancement
    Dialog Level Adjustment
    Dialog Normalization
    Dialogue Lift
    Compressed Music Enhancer
    High-resolution Music Enhancer
    Audyssey Dynamic EQ
    Audyssey Dynamic Volume
    Audyssey LFC
    Audyssey Sub EQ HT
    Audyssey DSX
    Direct Mode
    Pure Direct Mode
    Independent Subwoofer Outputs
    CALIBRATION
    Auto Speaker Calibration System with Mic. Audyssey MultEQ
    Optimized Bass Redirection
    Bass Sync
    VIDEO
    HDMI Version2.1
    Enhanced ARC
    HDCP Version2.3
    HDR10
    HDR10+
    Dynamic HDR
    Dolby Vision
    HLG (Hybrid Log Gamma)
    BT.2020 color space
    QMS (Quick Media Switching)
    ALLM (Auto Low Latency Mode)
    VRR (Variable Refresh Rate)
    QFT (Quick Frame transport)
    DSC (Display Stream Compression)
    3-D Ready
    Video Signal Passthroughup to 8K 50/60Hz (YCbCr 4:2:0/8-bit) and 4K 100/120Hz (RGB/YCbCr 4:4:4/8, 10-bit and YCbCr 4:2:2/12-bit)
    Video Signal Upscaling from 1080p and 4K up to 8K 50/60Hz and 4K 50/60Hz
    Analog To HDMI Upconversion
    Component Video Upscaling
    Analog to Analog Video conversion
    isf Certified Calibration Control
    CONNECTIVITY
    MHL Input
    DLNA 1.5
    FireConnect
    FlareConnect
    HEOS
    Chromecast Built-In
    DTS Play-Fi
    Works with Amazon Alexa
    Google assistant
    Apple Siri
    Works with SONOS
    AirPlay AirPlay 2
    Apple Product Connection iPod, iPhone and iPad
    Remote App Denon 2016 AVR Remote App for iOS and Android devices and Kindle Fire
    InstaPrevue Input Source Prevue
    Ethernet
    Ethernet Switch
    Wi-Fi
    Bluetooth SBC
    Bluetooth Headphone Transmission
    HDBaseT Compatible
    HDMI Inputs6
    HDMI Outputs1
    8K Inputs3
    USB Input1 Front for USB memory
    USB DC Out Port
    Analog Audio Line Input2
    Analog Audio Line Output
    Phono Input
    Optical Inputs2
    Optical Outputs
    Coaxial Inputs
    Composite Video Input2
    Composite Video Output1
    S-Video Input
    S-Video Output
    Component Video Input
    Component Video Output
    PC In
    Multi-Channel Input
    Analog Pre-Outs0.2
    XLR Inputs
    XLR Pre-outs
    Front A/V InputsUSB
    Speaker A/B
    Headphone Out6.3 mm (1/4")
    ZONES
    Zones1
    RS-232C Interface
    +12V Trigger Output
    Remote (IR) Input/Output0 / 0
    MISC
    On-Screen Display Hybrid Graphic User Interface
    GUI Languages9
    Web Browser Control
    IP Control for CI
    Control4 SDDP
    Display 1 line
    Remote ControllerRC-1243
    Pre-programmed / Learnable / LCD Display / /
    Detachable Power Cord
    Denon Link HD
    Setup Assistant
    Quick Select plus / Quick Select /
    RADIO
    Analog Tuner
    Digital Radio
    Internet Radio TuneIn
    Pandora
    Spotify
    Tidal
    Deezer
    Napster
    SiriusXM Internet Radio
    CONSTRUCTION
    Front Panelnot Metal
    Speaker Terminals5
    Large Speaker Terminals5
    Color-Coded Speaker Terminals
    Transparent High-Grade Speaker Terminals
    High Grade Audio Components
    Gold plated RCA terminals
    POWER
    Power SupplyAC 230 V, 50/60 Hz
    Power Consumption340 W
    No Sound PowerECO On/Off: 29 W/39 W
    Standby Power0.1 W
    GENERAL
    ECO Mode / Hybrid Standby Function
    Auto Power off
    Dimensions (W x H x D)434 mm x 151 mm x 339 mm (with antenna: 434 mm x 215 mm x 339 mm)
    17 1/8" x 6" x 13 3/8" (with antenna: 17 1/8" x 8 1/2" x 13 3/8")
    Dimensions of Package (W x H x D)523 mm x 232 mm x 435 mm
    20.6"e; x 9.1"e; x 17.1"e;
    Weight7.8 kg (17 lbs 3 oz)
    Warranty3 Years
    SPECS
    Power Output (8 Ω, 20 Hz - 20 kHz, 275 W (0.08% THD)
    Power Output (6 Ω, 1 kHz, 2100 W (0.7% THD)
    Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)150 W (10% THD)
    Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)135 W (1% THD)
    Phono Distortion0.03% (1 kHz, 3 V)
    Input Sensitivity and Impedance (Line)200 mV/47 kΩ
    Input Sensitivity and Impedance (Phono MM)2.5 mV
    S/N Ratio (Line, IHF-A)98 dB
    S/N Ratio (Phono MM, IHF-A)74 dB
    Phono RIAA Deviation±1 dB (20-20 kHz)
    Frequency Response (Analog In)+1/-3 dB (10 Hz to 100 kHz, Direct mode)
    DSD Sampling Rates via USB5.6 MHz, 2.8 MHz
    Video Input Sensitivity/Output Level and Impedance1 Vp-p/75 Ω (Composite)
    Video Frequency Response5 Hz to 10 MHz, 0 dB/-3 dB (Composite)
    Ethernet Standard100BASE-TX
    Wi-Fi StandardIEEE 802.11 a/b/g/n/ac
    Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
    Bluetooth Version4․2
    Bluetooth Frequency2.4 GHz
    USB TerminalUSB2.0 5V, 1 A

    * - 480i/576i and 480p/576p only
    ** - 480i/576i only
    *** - no 1080p/24 upconversion
    **** - 1080p signal is not converted

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