Dec 06, 2019
Read MoreDenon AVR-X1400H vs Onkyo TX-NR646 review
Onkyo TX-NR646 review
The gadgets are quite similar. They both have 7.2 channels, but the output power is bigger in Onkyo: 160W against 120W at 6-ohm load. Onkyo TX-NR646 impresses with its widest functionality, as it has as many as eight HDMI inputs with support for HDCP 2.2, for 4K video, and two HDMI outputs, thanks to which you can watch movies in two different rooms. In order to fully enjoy the capabilities of the amplifier, the Onkyo TX-NR646 receiver has eight analog audio inputs and two parallel audio outputs for subwoofers, as well as a USB connector for connecting any device with media files. 
Denon AVR-X1400H review
The control system has a simplified setup interface, but its sound digital path is advanced: a quad-core 32-bit processor with all the necessary decoders, the ability to work with wireless connections (Bluetooth, Wi-Fi), the standard Audyssey MultEQ XT auto calibration system using a remote microphone, and quite developed for an inexpensive model bass manager. Which, in particular, allows you to set not only different multichannel configurations and flexibly change the assignments of the sixth and seventh channels, but to vary the filter settings for each speaker over a wide range, precisely set the distances and corrections. 
Onkyo TX-NR646 pros & cons
Pros
- There is a Quick Setup function to simplify receiver setup
- It is possible to display an image in a 21:9 format
Cons
- The device has poor responsiveness to music playback commands such as pause \ start
Denon AVR-X1400H pros & cons
Pros
- There is an HDMI input with support for ARC audio reverse channel
- There are separate connectors for the front stereo pair for implementing the bi-amping circuit
Cons
- There are delays in audio when playing from DLNA or Chromecast device
Denon AVR-X1400H vs Onkyo TX-NR646
Denon and Onkyo
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Common
Product
Denon AVR-X1400H
Onkyo TX-NR646
Model
AVR-X1400H
TX-NR646
Brand
Denon
Onkyo
Reviews
140
403
Amplifier
Channels
7.2
7.2
Stereo power (RMS), W/Ohm
80/8, 120/6
160/6
Output impedance, Ohm
8, 6
6
Frequency response
10Hz-100KHz
10Hz-100KHz
THD in stereo, %
0.08
0.08
Audio features
Digital to analog converter (DAC)
192 KHz/24-bit
Hi-Grade 384 KHz/32-bit
Bi-amping
Pure direct (straight)
Auto speaker calibration
Audyssey MultEQ XT
AccuEQ
Speaker A/B switching
Other audio features
Audyssey Dynamic Volume, Audyssey Dynamic EQ
Theater-Dimensional, Double Bass Function, CinemaFILTER
Connectivity
Wi-Fi
USB
1 (USB 2.0)
1 (USB 2.0)
Bluetooth
Ethernet (RJ45)
1
1
DLNA
MHL
Streaming services
Apple Music (AirPlay)
AirPlay, AirPlay 2
AirPlay
Amazon Music
Spotify
Other streaming services
Deezer, TIDAL, Pandora, Napster, SiriusXM, TuneIn Radio, iHeart Radio, Sound Cloud
Deezer, TuneIn Radio
Extensive connection
HDMI input/output
6/1
8/2
HDMI ARC (Audio Return Channel)
HDMI eARC (Enhanced Audio Return Channel)
HDMI CEC
Digital content protection (HDCP)
HDCP 2.2
HDCP 2.2
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
2
3
Component input/output
0/0
2/0
Phono (MM) input
Front panel connectors
USB, HDMI, phones, setup mic
USB, HDMI, phones, setup mic, AUX
Multi channel preamp output
Video features
HDR (High Dynamic Range)
4K signal pass-through
4K/60Hz
4K/60Hz
8K signal pass-through
HDMI signal pass-through
3D signal pass-through
HDMI pass-through in standby mode
Video conversion
analog to HDMI
Analog to HDMI scaling
HDMI to HDMI scaling
Dolby Vision
Other video features
HLG, x.v.Color
DeepColor, x.v.Color
Additional features
Voice control
Amazon Alexa, Google Assistant, Siri, Josh.AI
App control
iPhone, iPad, iPod, Android, Amazon Kindle
iPhone, iPad, iPod, Android
Display
colour OSD
fluorescent
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
has not
Multi-room
Multi-room zones
3
2
Zone audio output
speaker, preout
speaker, preout
Zone HDMI output
Multi-room control
HEOS App, Denon 2016 AVR Remote
Onkyo Remote App
RS-232
0
0
Remote control input/output (IR)
0/0
1/0
DC trigger output (12V)
0
0
Multichannel surround
Dolby Atmos
Dolby TrueHD
Dolby Surround
Dolby (other)
Dolby Digital Plus
Dolby Digital Plus
DTS:X
DTS HD Master
DTS Virtual:X
DTS Neural:X
DTS (other)
DTS-ES, DTS 96/24, DTS-EXPRESS, DTS Surround
has not
Auro-3D
IMAX Enhanced
Multichannel stereo
Audio file formats
MP3
WMA
AAC
WAV
FLAC
ALAC
Other audio file formats
has not
has not
Power
Operational power consumption, W
430
630
Standby consumption, W
0.1
0.15
Removable power cord
Dimensions
Size W x H x D, cm/inches
43.7 x 22.4 x 33/17.1 x 8.5 x 13.3
43.5 x 17.3 x 33/17 x 6.8 x 13
Weight, kg/lbs
8.1/18.8
9.4/19.8
Other
Release year
2017
2015
AV receivers CHooseratoR comparison rating
- 7.3Denon AVR-X1400H
- 7.4Onkyo TX-NR646
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