Onkyo TX-RZ840 Review and Specs
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Onkyo TX-RZ840 (European version)

SCORE:
90

Highlights

  • 9.2 channels
  • 120 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • THX Selectβ„’ certified
  • Dolby Atmos, DTS:X capable
  • HDR10, Dolby Vision, 4K Passthrough
  • AirPlay 2, Chromecast
  • Ethernet, Wi-Fi, Bluetooth
  • USB and Phono inputs

Disclosure: We earn money from the affiliate links to products associated with content in this article.

Onkyo TX-RZ840 Overview

Onkyo TX-RZ840 was introduced in 2019. It is equipped with 9 channel amplifier and is capable of 11.1 maximum channel processing.

We evaluated the Receiver and gave 90 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
92
VIDEO FEATURES
90
AUDIO FEATURES
92
CONNECTIVITY
89
MULTIZONE
91
MISCELLANEOUS
74
RADIO
90
OVERALL
90

Amplifier score is based on power ratings, minimum impedance load, power supply, transformer type, total harmonic distortion, damping factor, signal to noise ratio and other small details. Audio score depends on the number of channels, front wide channel support, maximum channel processing, support of audio formats, DAC specifications, room calibration algorithm... Video score is based on HDR, Dolby Vision and video signal passthrough and upscaling, analog to HDMI upconversion. Connectivity score is defined from all wired and wireless inputs and outputs, internet and bluetooth connections, HEOS, SONOS and others. Multizone score depends on the number of zones with their outputs. Radio score is evaluated form digital radio support and analog tuner with its frequency range, signal to noise ratio, harmonic distortion...

Pros and Cons

In this section we present pros and cons of Onkyo TX-RZ840.

PROS
Dynamic Audio Amplification πŸ‘
THXβ„’ Certification πŸ‘
Certified 4 Ω Performance πŸ‘
Bi-amp Capability πŸ‘
Many Channel Processing πŸ‘
Dolby Atmos πŸ‘
Dolby Atmos Height Virtualization πŸ‘
Dolby TrueHD πŸ‘
Dolby Digital Plus πŸ‘
Dolby Surround Upmixer πŸ‘
THX Listening Modes πŸ‘
DTS:X πŸ‘
DTS Neural:X πŸ‘
DTS-HD Master Audio πŸ‘
DTS-HD High Resolution Audio πŸ‘
DTS 96/24 πŸ‘
DTS Express πŸ‘
DTS-ES πŸ‘
IMAX Enhanced πŸ‘
High Resolution Music Playback via USB and/or Network πŸ‘
Gapless Playback πŸ‘
DSD via HDMI πŸ‘
DSD via USB πŸ‘
DTS Dialog Control πŸ‘
Dialog Normalization πŸ‘
Compressed Music Enhancer πŸ‘
THX Processing Mode πŸ‘
Auto Speaker Calibration System with Mic. πŸ‘
HDR10 πŸ‘
BT.2020 color space πŸ‘
Dolby Vision πŸ‘
HLG πŸ‘
3-D Ready πŸ‘
4K or 8K Video Passthrough πŸ‘
Analog To HDMI Upconversion πŸ‘
FlareConnect πŸ‘
Chromecast Built-In πŸ‘
DTS Play-Fi πŸ‘
Works with SONOS πŸ‘
Ethernet πŸ‘
Wi-Fi πŸ‘
Bluetooth πŸ‘
New HDCP Version πŸ‘
Many HDMI Inputs πŸ‘
USB Input πŸ‘
Many Analog Audio Line Inputs πŸ‘
Phono Input πŸ‘
Composite Video Inputs πŸ‘
Component Video Inputs πŸ‘
Analog Pre-Outs πŸ‘
Zones πŸ‘
Detachable Power Cord πŸ‘
Analog Tuner πŸ‘
Spotify πŸ‘
Tidal πŸ‘
Deezer πŸ‘
H.C.P.S. (High Current Power Supply) πŸ‘
New Bluetooth Version πŸ‘
CONS
No Front Wide Channel Support πŸ‘Ž
No Auro 3D with Auro-Matic Upmixer πŸ‘Ž
No High-resolution Music Enhancer πŸ‘Ž
No HDR10+ πŸ‘Ž
No 4K or 8K Video Upscaling πŸ‘Ž
Does not Work with Amazon Alexa πŸ‘Ž
No eARC πŸ‘Ž
No Multi-Channel Input πŸ‘Ž
No Pandora πŸ‘Ž
No Napster πŸ‘Ž
No SiriusXM Internet Radio πŸ‘Ž

Major Changes from its predecessor

Here we are comparing Onkyo TX-RZ840 to its predecessor TX-RZ830 and displaying the major changes.

UPGRADES Onkyo TX-RZ840 Onkyo TX-RZ830
Dolby Atmos Height Virtualization βœ” βœ–
IMAX Enhanced βœ” βœ–
Newer HDCP Version 2.3 2.2
Newer Bluetooth Version 4.2 4.1 + LE

DOWNGRADES Onkyo TX-RZ840 Onkyo TX-RZ830
Less Optical Inputs 1 2
Less Component Video Inputs 1 2

For more detailed comparison between the models please visit Onkyo TX-RZ840 vs Onkyo TX-RZ830.

Selected Features

Amplifier

Onkyo TX-RZ840 has 9 channel amplifier and delivers 120 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and also has a stable performance at 4 Ω load.


Video Features

The Receiver has 4K passthrough up to 60p. It can bypass HDR10, Dolby Vision.


HDR10

High-dynamic-range (HDR) video has greater dynamic range than standard-dynamic-range (SDR) video with brigter whites and deeper blacks. HDR10 was announced on August 27, 2015, by the Consumer Technology Association and 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 up to 1000 nits of brightness and 10-bit color which corresponds to 1024 shades of the primary RGB colors.


Dolby Vision

Dolby Vision is an update to HDR10 by adding dynamic metadata that can be used to more accurately adjust brightness levels up to 10,000 nits maximum brightness on a scene-by-scene or frame-by-frame basis and supports up to 12-bit color depth (4096 shades of RGB) and 8K resolution.


Dolby Atmos and Dolby Surround upmixer

Onkyo TX-RZ840 supports Dolby Atmos with its Dolby Surround upmixer. It can be configured upto 7.1.2 or 5.1.4 channels using internal amplifiers or upto 7.1.4 channels by adding 2 channel external amplifier.

Dolby Atmos is the first cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound - the helicopter, a car screeching around a corner, a melodic bird call - can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. You'll feel like you're inside the action, in ways you've never experienced before.

Dolby Atmos for the home represents every sound in the original cinema mix as an audio object. Extensions to the Dolby Audioβ„’ codecs, along with an advanced scalable algorithm, allow Dolby Atmos to be delivered via Blu-ray Disc and streaming media. A spatially-coded substream is added to Dolby TrueHD or Dolby Digital Plus. A Dolby Atmos audio/video receiver (AVR) adapts the cinema experience to your home theater from seven speakers to as many as 34 in 24.1.10 configuration, recreating the original artistic concept. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.

If the content is not mixed in Dolby Atmos then the Dolby surround upmixer will expand the audio to all channels including ceiling speakers. The upmixer has replaced the Dolby Pro Logic II family with improved upmixing algorithms.


DTS:X and Neural:X upmixer

Onkyo TX-RZ840 supports DTS:X with its Neural:X upmixer. It can be configured upto 7.1.2 or 5.1.4 channels using internal amplifiers or upto 7.1.4 channels by adding 2 channel external amplifier.

A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.

DTS Neural:X is a new upmixer that can take non DTS:X content and upmix it to the DTS:X speaker layout. It has replaced the DTS Neo family with improved flexibility.


Dynamic Audio Amplification

Onkyo TX-RZ840 features Dynamic Audio Amplification which is Onkyo’s amplification philosophy that focuses on capturing the energy and dynamism contained in the audio signal and reproducing it without loss. Audio signals are not static like a test tone, but rather a countless collection of constantly moving waves. While static measurements such as S/N ratio and Total Harmonic Distortion are important, Onkyo believes that excellent dynamic and transient response is the key to emotionally involving sound. Dynamism - the β€œlife” in music - is achieved when the amp can respond to changes in the signal instantaneously, so notes start and stop naturally and the nuances in attack, decay, sustain, and release are voiced with conviction. Onkyo home theater receivers represent the culmination of almost 70 years’ experience in amplifier design. The unique elements of their amplification system comprise high-current, low-impedance architecture to accurately control large speaker cones while enabling instantaneous response to dynamic changes, and discrete wide-range amplifier circuit topology to eliminate phase shift for clear and accurate audio imaging.


THXβ„’ Certification

Onkyo TX-RZ840 is THXβ„’ certified which offers optimal performance, superior quality and seamless integration. THX works with partners from the ground up, so that certified products deliver professional quality audio-visual experiences right out of the box. They only certify the very best products with uncompromised quality, performance and consistency. They ensure that THX certified devices play well with lower performing devices and components. THX listening modes make the receiver to have one speaker set up for movies, music and games. They are tested for power output, bass management, signal-to-noise ratio and feature RE-EQ, timbre matching, boundary gain compensation and THX Loudness Plus. The current model has[y] Selectβ„’ (previously known as Select2) class performance. This means that it is for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-RZ840 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.


Room Correction

Onkyo TX-RZ840 comes with[y] AccuEQ Advance with AccuReflexβ„’ room correction system and includes the calibration microphone.


Connectivity

Onkyo TX-RZ840 can be connected to internet using ethernet cable or built-in wi-fi adapter. It can also connect to bluetooth devices via built-in bluetooth adapter. The Receiver works with SONOS and supports[y] AirPlay 2 after firmware update. It has 7 HDMI inputs and HDCP 2.3 copy protection. There is a phono input with built-in phono stage for connecting the cartridge output of the turntable directly to the Receiver. There are 11.2 (barter to Zone 3 Pre/Line Out) channel analog pre-outs for external amplification.

Front panel has HDMI input.

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Detailed Specifications

Here we list all the available features and specifications of Onkyo TX-RZ840.

BASICS
BrandOnkyo
ModelTX-RZ840
TypeA/V Receiver
CountryEurope
Release Year2019
AMPLIFIER
Channels9.2
Front Wide Channel Supportβœ–
Dynamic Audio Amplificationβœ”
Non-Phase Shift Amplifierβœ”
VLSC (Vector Linear Shaping Circuitry)βœ” Front L/R Channels
THXβ„’ Certificationβœ” Selectβ„’ (previously known as Select2)
Continuous 6 Ω Ratedβœ”
Certified 4 Ω Performanceβœ”
Discrete Output Stage Circuitryβœ”
Independent Block Construction (Amp/Preprocessor)βœ–
Bi-amp Capabilityβœ”
BTL (Bridged Transless or Bridging)βœ–
AUDIO
Digital Signal Processing (DSP) Engine32-bit Digital Signal Processing Engines
DACAKM AK4458
Maximum Channel Processing11.1
Air Studios Monitor Certificationβœ–
Dolby Atmosβœ”
Dolby Atmos Height Virtualizationβœ”
Dolby TrueHDβœ”
Dolby Digital Plusβœ”
Dolby Surround Upmixerβœ”
Dolby Pro Logicβœ–
Dolby Digital EXβœ–
THX Listening Modesβœ”
DTS:Xβœ”
DTS Neural:Xβœ”
DTS Neoβœ–
DTS-HD Master Audioβœ”
DTS-HD High Resolution Audioβœ”
DTS 96/24βœ”
DTS Expressβœ”
DTS-ESβœ”
IMAX Enhancedβœ”
Auro 3D with Auro-Matic Upmixerβœ–
PCMβœ” 2-ch/Multi-ch Input
Music Playback via USBFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD
High Resolution Music Playback via USB and/or Networkβœ” up to 192 kHz
High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD
Multi-Channel Music File Playback via USBβœ–
Gapless Playbackβœ”
DSD via HDMIβœ” 2-ch/Multi-ch Input
DSD via USBβœ” 2-ch Input
DSD to PCM Converterβœ–
USB DACβœ–
Jitter Reductionβœ” PLL (Phase Locked Loop) Jitter-Cleaning Circuit Techβœ– logy for S/PDIF Audio
DTS Dialog Controlβœ”
Dialog Enhancementβœ–
Dialog Normalizationβœ”
Dialogue Liftβœ–
Tone Controlβœ” All Channels
Compressed Music Enhancerβœ” Advanced Music Optimizer (bluetooth included)
High-resolution Music Enhancerβœ–
THX Processing Modeβœ”
Audyssey Dynamic EQβœ–
Audyssey Dynamic Volumeβœ–
Audyssey LFCβœ–
Audyssey Sub EQ HTβœ–
Audyssey DSXβœ–
Direct Modeβœ”
Pure Audio Modeβœ”
Pure Direct Analog Path Modeβœ–
Virtual Speakersβœ” T-D (Theater-Dimensional)
CALIBRATION
Auto Speaker Calibration System with Mic.βœ” AccuEQ Advance with AccuReflexβ„’
VIDEO
HDR10βœ”
HDR10+βœ–
Dynamic HDRβœ–
BT.2020 color spaceβœ”
Dolby Visionβœ”
Hybrid Log Gamma (HLG)βœ”
Quick Media Switching (QMS)βœ–
Auto Low Latency Mode Pass-throughβœ–
Variable Refresh Rate (VRR)βœ–
Quick Frame Transport (QFT)βœ–
3-D Readyβœ”
Video Signal Passthroughup to 4K/60p (RGB/YCbCr4:4:4)
Video Signal Upscalingβœ–
Analog To HDMI Upconversionβœ” Component**, Composite
Component Video Upscalingβœ–
Analog to Analog Video conversionβœ–
Component Video Maximum Resolution480i/576i
isf Certified Calibration Controlβœ–
CONNECTIVITY
MHL Inputβœ–
FireConnectβœ–
FlareConnectβœ”
Chromecast Built-Inβœ”
DTS Play-Fiβœ” via Onkyo Music Control app
Works with Amazon Alexaβœ–
Works with SONOSβœ”
AirPlayβœ” AirPlay 2 after firmware update
Apple Product Connectionβœ” iPod, iPhone and iPad
Remote AppOnkyo Onkyo Controller and Music Control apps
InstaPrevue Input Source Prevueβœ–
Ethernetβœ”
Ethernet Switchβœ–
Wi-Fiβœ”
Bluetoothβœ” SBC, AAC
HDBaseT Compatibleβœ–
Enhanced ARCβœ–
HDCP Version2.3
HDMI Input7 (1 front)
HDMI Output2 (1 Main, 1 Sub/Zone2)
USB Input1 (Rear)
USB DC Out Portβœ–
Analog Audio Line Input6
Analog Audio Line Outputβœ–
Phono Inputβœ”
Optical In1
Optical Outβœ–
Coaxial In/Out1 / βœ–
Composite Video Input2
Composite Video Outputβœ–
S-Video Inputβœ–
S-Video Outputβœ–
Component Video Input1
Component Video Outputβœ–
PC Inβœ–
Multi-Channel Inputβœ–
Analog Pre-Outs11.2 (barter to Zone 3 Pre/Line Out)
XLR Inputsβœ–
XLR Pre-outsβœ–
Front A/V InputsHDMI
Speaker A/Bβœ–
Headphone Outβœ” 6.3 mm
ZONES
Zones3
Powered Zonesβœ” 2 and 3
Zone 2HDMI, RCA Pre/Line Out (shared with Zone B Line out)
Zone 3 OutsRCA Pre/Line Out
Whole House Modeβœ”
RS-232βœ”
+12V Trigger Output1 (MAIN, 100 mA)
Remote (IR) Input/Output1 / 0
MISC
On-Screen Displayβœ” Graphical User Interface with Overlaid On-Screen Display (OSD) via HDMI
GUI Languages9
IP Control for CIβœ”
Detachable Power Cordβœ”
uportβœ–
ONKYO-RI System Controlβœ–
RIHD (Remote Interactive Over HDMI)βœ”
Smart Grid-Readyβœ”
RADIO
Analog Tunerβœ” FM/AM with RDS
Presets40
Digital Radioβœ–
Internet Radioβœ” TuneIn
Pandoraβœ–
Spotifyβœ”
Tidalβœ”
Deezerβœ”
Napsterβœ–
SiriusXM Internet Radioβœ–
CONSTRUCTION
Solid Aluminum Frontβœ”
Speaker Terminals9
Large Speaker Terminals9
Color-Coded Speaker Terminalsβœ–
Transparent High-Grade Speaker Terminalsβœ–
18mm Pitch High Grade Pre-outsβœ–
19mm-Pitch Audio Inputsβœ–
Gold plated RCA terminalsβœ–
POWER
Power SupplyAC 220-240 V, 50/60 Hz
H.C.P.S. (High Current Power Supply)βœ” Customized Transformer
Toroidal Transformerβœ–
Power Consumption870 W
No Sound Power70 W
Standby Power0.15 W
GENERAL
ECO Mode / Hybrid Standby Functionβœ”
Dimensions (W x H x D)435 mm x 201.5 mm x 398 mm
17-1/8" x 7-15/16" x 15-11/16"
Dimensions of Package (W x H x D)570 mm x 335 mm x 490 mm
22-7/16" x 13-3/16" x 19-5/16"
Weight14 kg (30.9 lbs)
Weight of Package17.0 kg (37.5 lbs)
Warranty3 Years
SPECS
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)180 W (1% THD)
Dynamic Power per Channel (3 Ω, Front)250 W
Dynamic Power per Channel (4 Ω, Front)220 W
Dynamic Power per Channel (8 Ω, Front)130 W
THD0.08% (20 Hz - 20 kHz, Half power)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ
Input Sensitivity and Impedance (Phono MM)3.5 mV/47 kΩ
Rated Preout Level and Impedance1 V/470 Ω
Rated Headphone Power Output85 mW (32 Ω, 1 kHz, 10% THD)
Phono Overload70 mV (MM, 1 kHz 0.5%)
S/N Ratio (Line, IHF-A)106 dB
S/N Ratio (Phono MM, IHF-A)80 dB
Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (Direct/Pure Audio)
DSD Sampling Rates via HDMI2.8 MHz
DSD Sampling Rates via USB2.8 MHz, 5.6 MHz, 11.2 MHz
Video Input Sensitivity/Output Level and Impedance1 Vp-p/75 Ω (Component Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite)
Ethernet Standard10BASE-T/100BASE-TX
Wi-Fi StandardIEEE 802.11 a/b/g/n
Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
Bluetooth Version4.2
Bluetooth Frequency2.4 GHz
USB TerminalVer. 2.0, 5 V, 1 A
FM Frequency87.5 MHz - 108.0 MHz
FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)Mono: 1.0 Β΅V (11.2 dBf)
AM Frequency522/530 kHz - 1611/1710 kHz

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

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