Denon AVR-X1800H vs. Denon AVR-S660H

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AVR-X1800H vs AVR-S660H comparison chart

AVR-X1800H vs AVR-S660H comparison

Denon AVR-X1800H
Denon AVR-X1800H
Denon AVR-S660H
Denon AVR-S660H


AVR-X1800H AVR-S660H
Channels 7.2 5.2
Stereo power (RMS), W/Ohm 80/8, 120/6 75/8, 100/6
Output impedance, Ohm 8, 6 8, 6
Frequency response 10Hz-100KHz 10Hz-100KHz
THD in stereo, % 0.08 0.08

Audio features

AVR-X1800H AVR-S660H
Digital to analog converter (DAC) 192 KHz/32-bit 192 KHz/32-bit
Pure direct (straight)
Auto speaker calibration Audyssey MultEQ Audyssey MultEQ
Speaker A/B switching
Other audio features Audyssey Dynamic Volume, Audyssey Dynamic EQ, Compressed Audio Restorer Audyssey Dynamic Volume, Audyssey Dynamic EQ, Hi-Res audio


AVR-X1800H AVR-S660H
Wi-Fi 2.4/5GHz 2.4/5GHz
USB 2 (USB 2.0) 1 (USB 2.0)
Ethernet (RJ45) 1 1

Streaming services

AVR-X1800H AVR-S660H
Apple Music (AirPlay) AirPlay, AirPlay 2 AirPlay, AirPlay 2
Amazon Music
Other streaming services Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud, Amazon Music, Amazon Music HD, MOOD:Mix Deezer, TIDAL, Pandora, SiriusXM, Napster, SoundCloud

Extensive connection

AVR-X1800H AVR-S660H
HDMI input/output 6/1 6/1
HDMI ARC (Audio Return Channel)
HDMI eARC (Enhanced Audio Return Channel)
Digital content protection (HDCP) HDCP 2.3 HDCP 2.3
Subwoofer output (LFE) 2 2
Headphone output 1 x 6.3 1 x 6.3
Optical digital input 2 2
Coaxial digital input 1 1
Composite input 0 2
Component input/output 0/0 0
Phono (MM) input
Front panel connectors USB, phones, setup mic USB, phones, setup mic
Multi channel preamp output

Video features

AVR-X1800H AVR-S660H
HDR (High Dynamic Range) HDR10+ HDR10+
4K signal pass-through 4K/120Hz 4K/120Hz
8K signal pass-through 8K/60Hz 8K/60Hz
HDMI signal pass-through
3D signal pass-through
HDMI pass-through in standby mode
Video conversion
Analog to HDMI scaling
HDMI to HDMI scaling
Dolby Vision
Other video features Dynamic HDR, Variable Refresh Rate, Quick Frame Transport, Auto Low Latency Mode Dynamic HDR, HLG, BT.2020

Additional features

AVR-X1800H AVR-S660H
Voice control Amazon Alexa, Google Assistant, Siri, Josh.AI Amazon Alexa, Google Assistant, Siri, Josh.AI
App control iPhone, iPad, iPod, Android iPhone, iPad, iPod, Android
Display colour OSD colour OSD
Tuner AM, FM AM, FM
Sleep timer
Auto power off
ECO mode
Graphical user interface (GUI)
Setup assistant
Firmware update network, USB network, USB
Other additional features IP Control, Web Control, App Control Web Control, App Control


AVR-X1800H AVR-S660H
Multi-room zones 2 has not
Zone audio output speaker has not
Zone HDMI output has not
Multi-room control HEOS App, Denon 2016 AVR Remote HEOS App, Denon 2016 AVR Remote
RS-232 0 0
Remote control input/output (IR) 0/0 0/0
DC trigger output (12V) 0 0

Multichannel surround

AVR-X1800H AVR-S660H
Dolby Atmos
Dolby TrueHD
Dolby Surround
Dolby (other) Dolby Atmos Music, Dolby Atmos Height Virtualization Dolby ProLogic Il
DTS HD Master
DTS Virtual:X
DTS Neural:X
DTS (other) DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS DTS Neo:6
IMAX Enhanced
Multichannel stereo

Audio file formats

AVR-X1800H AVR-S660H
Other audio file formats AIFF, DSD AIFF, DSD


AVR-X1800H AVR-S660H
Operational power consumption, W 430 340
Standby consumption, W 0.1 0.1
Removable power cord


AVR-X1800H AVR-S660H
Size W x H x D, cm/inches 17.1Г— 13.3 Г— 6 / 43.4 x 33.7 x 15.2 43.4 x 33.9 x 21.5/17 x 13.3 x 8.4
Weight, kg/lbs 8.8/19 7.8/17


AVR-X1800H AVR-S660H
Release year 2023 2021
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