Onkyo TX-RZ830 vs Onkyo TX-NR646

Onkyo TX-RZ830

Onkyo TX-RZ830 review

Oct 16, 2018

An Onkyo TX-RZ830 has all the features, which has to be in a modern audio/video receiver. It can propose 4K and HDR pass-through and decode for Dolby Atmos and DTS:X soundtracks. Such peculiarities w...

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Onkyo TX-NR646

Onkyo TX-NR646 review

May 20, 2019

Amazing Dolby Atmos sound for a great price – that’s what Onkyo TX-NR646 is about. 4 Built-in decoders, recognition of 7 audio formats and ability to control the receiver remotely makes O...

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Votes 1 1
Rating 5 5

Common

Product

Onkyo TX-RZ830
Onkyo TX-NR646

Model

TX-RZ830
TX-NR646

Brand

Onkyo
Onkyo

Rating

3.6 of 5
3.6 of 5

Reviews

33
399

Amplifier

Total output power

980 W
580 W

Output power per channel

180 W
100 W, 170 W

Output impedance per channel

6 Ohm
6 Ohm, 8 Ohm

Frequency response

5 Hz-100 kHz
20 Hz-20 kHz

Total harmonic distortion

0.08 %
0.08 %

Number of channels

9
7

Signal-to-noise ratio

108 dB
106 dB

Functions

Digital player

Internet radio

Network audio player

Audio formats

AAC

AIFF

Apple lossless

FLAC

MP3

WAV

WMA

Built-in decoders

DTS:X

Dolby Atmos

Dolby digital plus

Dolby surround

Dolby true HD

Built-in display

Type

fluorescent
fluorescent

Colour

black
black

Connectivity interfaces

Bluetooth

Wi-Fi

IEEE 802.3

IEEE 802.3u

Signal processing

HDMI pass-through

up to 4K
Up to 4K

Video conversion/scaling

HDMI to HDMI scaling, analog to HDMI up conversion
Analog to HDMI up conversion

3D pass-through

has not

Upscaling via HDMI

up to 4K
has not

Connector type

AV inputs

7
2

Optical digital inputs

2
2

Coaxial digital inputs

1
1

HDMI inputs

7
8

HDMI outputs

2
2

Optical digital outputs

has not
has not

Coaxial digital outputs

has not
has not

Subwoofer outputs

2
2

USB

1
1

Phones

1
1

Media content source

Bluetooth

Network

USB-host

Radio

Tuner type

digital
digital

Tuner bands

AM/FM
AM/FM

Preset station

40
40

Additional features

A-B speaker switch

Three-zone capability

Advanced sound retriever (ASR) technology

Apple air-play support

Audio return channel (ARC)

Bi-amplifying

Auto power off

Pure direct mode

Dual-zone capability

Smartphone remote control

Sound features

Audio D/A converter

24bit / 192kHz
32bit / 384kHz

Surround sound effects

Theater-Dimensional Virtual Surround
Theater-Dimensional Virtual Surround

Surround system class

9.2 channel
7.2 channel

Digital content protection

HDCP 2.2
has not

Clock

Built-in clock

Sleep timer

has not

Power device

Operational power consumption

850 W
360 W

Standby power consumption

0.15 W
0.1 W

User manual

Manual

Dimensions

Dimensions

15.7 x 17.2 x 8 inches
12.9 x 17.1 x 6.8 inches

Weight

31 pounds
20.7 pounds
Onkyo TX-RZ830
Onkyo TX-NR646
Onkyo TX-RZ830
Onkyo TX-NR646

AV receivers HelpToChoose comparison rating

  • better
  • worse
  • 23.9
  • 19.8
  • 23.9Onkyo TX-RZ830
  • 19.8Onkyo TX-NR646

The Onkyo TX-RZ830 is better receiver in this comparison. Check Onkyo TX-RZ830 price

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