Onkyo TX-NR818 Review and Specs

Onkyo TX-NR818 (USA version)

SCORE:
51

Highlights

  • 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • THX Selectβ„’2 Plus certified
  • 4K Upscaling, 1080p Passthrough
  • DLNA
  • Ethernet, Wi-Fi
  • USB and Phono inputs

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Onkyo TX-NR818 Overview

Onkyo TX-NR818 was introduced in 2012. It is equipped with 7 channel amplifier and is capable of 9.1 maximum channel processing.

We evaluated the Receiver and gave 51 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
76
VIDEO FEATURES
20
AUDIO FEATURES
38
CONNECTIVITY
51
MULTIZONE
66
MISCELLANEOUS
48
RADIO
68
OVERALL
51

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-NR818.

PROS
Front Wide Channel Support πŸ‘
Many Channel Processing πŸ‘
DSD via HDMI πŸ‘
DSD via USB πŸ‘
Audyssey Dynamic EQ πŸ‘
Audyssey Dynamic Volume πŸ‘
4K or 8K Signal Upscaling πŸ‘
MHL Input πŸ‘
DLNA 1.5 πŸ‘
Ethernet πŸ‘
Wi-Fi 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‘
Analog Tuner πŸ‘
Internet Radio πŸ‘
Pandora πŸ‘
Spotify πŸ‘
SiriusXM Internet Radio πŸ‘
CONS
No Dolby Atmos πŸ‘Ž
No Dolby Atmos Height Virtualization πŸ‘Ž
No DTS:X πŸ‘Ž
No DTS Neural:X πŸ‘Ž
No DTS Virtual:X πŸ‘Ž
No IMAX Enhanced πŸ‘Ž
No Auro 3D with Auro-Matic Upmixer πŸ‘Ž
No DTS Dialog Control πŸ‘Ž
No Audyssey LFC πŸ‘Ž
No Audyssey Sub EQ HT πŸ‘Ž
No HDR10 πŸ‘Ž
No HDR10+ πŸ‘Ž
No Dynamic HDR πŸ‘Ž
No Dolby Vision πŸ‘Ž
No Auto Low Latency Mode Pass-through πŸ‘Ž
No VRR πŸ‘Ž
No QFT πŸ‘Ž
No 4K or 8K Video Passthrough πŸ‘Ž
No FireConnect πŸ‘Ž
No FlareConnect πŸ‘Ž
No Chromecast Built-In πŸ‘Ž
No DTS Play-Fi πŸ‘Ž
Does not Work with Amazon Alexa πŸ‘Ž
Does Not Work with SONOS πŸ‘Ž
No Bluetooth πŸ‘Ž
No eARC πŸ‘Ž
No Multi-Channel Input πŸ‘Ž
No Tidal πŸ‘Ž
No Deezer πŸ‘Ž
No Napster πŸ‘Ž
No Toroidal Transformer πŸ‘Ž

Major Changes from its predecessor

Here we are comparing Onkyo TX-NR818 to its predecessor TX-NR809 and displaying the major changes.

UPGRADES Onkyo TX-NR818 Onkyo TX-NR809
Independent Block Construction (Amp/Preprocessor) βœ” βœ–
More Channel Processing 9.1 7.1
Higher Resolution Music Playback via USB βœ” up to 192 kHz βœ” up to 96 kHz
DSD via USB βœ” 2-ch Input βœ–
More Advanced Auto Speaker Calibration System βœ” Audyssey MultEQ XT32 βœ” Audyssey MultEQ XT
MHL Input βœ” Front HDMI βœ–
More Analog Audio Line Inputs 7 (1 front) 6 (1 front)
More Analog Pre-Outs 9.2 7.2
Bigger Power Supply 8.1 A 7.5 A

DOWNGRADES Onkyo TX-NR818 Onkyo TX-NR809
Less Analog Audio Line Outputs βœ– 1
Less Composite Video Outputs 1 2
Multi-Channel Input βœ– βœ” 7.1
Digital Radio βœ– βœ” HD Radio via optional UP-HT1 Tuner (sold separately)
Napster βœ– βœ”

For more detailed comparison between the models please visit Onkyo TX-NR818 vs Onkyo TX-NR809.

Selected Features

Amplifier

Onkyo TX-NR818 has 7 channel amplifier and delivers 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and also has a stable performance at 4 Ω load. This receiver even supports front wide channels which is found only in a very few high-end receivers these days.


Video Features

The Receiver has 1080p passthrough and 4K upscaling up to 30p.


WRAT

Onkyo TX-NR818 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.


3-Stage Inverted Darlington Circuitry

Onkyo TX-NR818 features 3-Stage Inverted Darlington Circuitry. Standard amplifiers employ a negative feedback (NFB) design that counters distortion by feeding back the opposite phase of the output signal into the input stage. Unfortunately, NFB is easily affected by inverse electromotive forces from the speakers, leading to an increase in circuit noise. Three-Stage Inverted Darlington Circuitry is a core Onkyo technology incorporating a low-NFB design that makes the sound more natural. Sensitive to oscillations, this circuitry requires very advanced control technology in order to be incorporated into the amplifier.


THXβ„’ Certification

Onkyo TX-NR818 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 Selectβ„’2 Plus class performance. This means that it is ideally suited for a room where the screen-to-seat viewing distance is approximately 3 to 4 meters, and the room size is approximately 56 cubic meters.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-NR818 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.


Audyssey

Onkyo TX-NR818 comes with Audyssey Dynamic EQ, Audyssey Dynamic Volume and Audyssey DSX.

Audyssey 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.

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.

Audyssey DSX allows you to augment a standard five-channel home theater with either two Front Wide or two Front High speakers. The Wide channels create an expansive soundstage and bring out convincing directional effects. Alternatively, Height channels can add a vertical dimension to movie and game soundtracks.


Room Correction

Onkyo TX-NR818 comes with Audyssey MultEQ XT32 room correction system and includes the calibration microphone.

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.


Connectivity

Onkyo TX-NR818 can be connected to internet using ethernet cable or wirelessly via Front USB (optional UWF-1 sold separately). It has 8 HDMI inputs and HDCP 2.2 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 9.2 channel analog pre-outs for external amplification.

Front panel has HDMI/MHL, USB, Composite Video, RCA Audio and Optical inputs.

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Detailed Specifications

Here we list all the available features and specifications of Onkyo TX-NR818.

BASICS
BrandOnkyo
ModelTX-NR818
TypeA/V Receiver
CountryUSA
Release Year2012
AMPLIFIER
Channels7.2
Front Wide Channel Supportβœ”
WRAT (Wide Range Amplifier Technology)βœ”
VLSC (Vector Linear Shaping Circuitry)βœ–
Optimum Gain Volume Circuitryβœ” Linear
THXβ„’ Certificationβœ” Selectβ„’2 Plus
Continuous 6 Ω Ratedβœ”
Certified 4 Ω Performanceβœ”
Discrete Output Stage Circuitryβœ”
3-Stage Inverted Darlington Circuitryβœ”
PUSH-PULL Designβœ–
Independent Block Construction (Amp/Preprocessor)βœ”
Bi-amp Capabilityβœ”
BTL (Bridged Transless or Bridging)βœ–
AUDIO
Digital Processing Crossover Networkβœ”
Digital Signal Processing (DSP) EngineAdvanced 32-Bit Processing DSP Chip
DACBurr-Brown
Maximum Channel Processing9.1
Air Studios Monitor Certificationβœ–
Dolby Atmosβœ–
Dolby Atmos Height Virtualizationβœ–
Dolby TrueHDβœ”
Dolby Digital Plusβœ”
Dolby Surround Upmixerβœ–
Dolby Pro Logicβœ” PLIIz
Dolby Digital EXβœ”
Surround EXβœ” also known as Dolby Digital Surround EX
DTS:Xβœ–
DTS Neural:Xβœ–
DTS Virtual:Xβœ–
DTS Neoβœ” Neo:X
DTS-HD Master Audioβœ”
DTS-HD High Resolution Audioβœ”
DTS 96/24βœ”
DTS Expressβœ”
DTS-ESβœ” Discrete 6.1, Matrix 6.1
IMAX Enhancedβœ–
Auro 3D with Auro-Matic Upmixerβœ–
PCMβœ” 2-ch/Multi-ch Input
Music Playback via USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, Dolby TruHD, LPCM, AAC
High Resolution Music Playback via USB and/or Networkβœ” up to 192 kHz
High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, WMA Lossless, LPCM, 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 Technology
DTS Dialogue Controlβœ–
Dialog Enhancementβœ–
Dialog Level Adjustmentβœ–
Dialog Normalizationβœ”
Dialogue Liftβœ” Screen Centered Dialog
Tone Controlβœ” Front L/R Channels
Compressed Music Enhancerβœ” Advanced Music Optimizer
High-resolution Music Enhancerβœ–
THX Processing Modeβœ”
Audyssey Dynamic EQβœ”
Audyssey Dynamic Volumeβœ”
Audyssey LFCβœ–
Audyssey Sub EQ HTβœ–
Audyssey DSXβœ”
Phase-Matching Bass Boostβœ–
Direct Modeβœ”
Pure Audio Modeβœ”
Pure Direct Analog Path Modeβœ–
Virtual Speakersβœ” T-D (Theater-Dimensional)
Independent Dual Subwoofer Outputβœ–
CALIBRATION
Auto Speaker Calibration System with Mic.βœ” Audyssey MultEQ XT32
Audyssey App Supportβœ–
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 (ALLM)βœ–
Variable Refresh Rate (VRR)βœ–
Quick Frame Transport (QFT)βœ–
3-D Readyβœ”
Video Signal Passthroughup to 1080p
Video Signal Upscalingβœ” up to 4K/30p (Marvell Qdeo)
Analog To HDMI Upconversionβœ” Component, Composite, PC
Component Video Upscalingβœ–
Analog to Analog Video conversionβœ–
Component Video Maximum Resolution1080p
isf Certified Calibration Controlβœ”
CONNECTIVITY
MHL Inputβœ” Front HDMI
DLNA 1.5βœ”
FireConnectβœ–
FlareConnectβœ–
Chromecast Built-Inβœ–
DTS Play-Fiβœ–
Works with Amazon Alexaβœ–
Works with SONOSβœ–
AirPlayβœ–
Apple Product Connectionβœ” iPod and iPhone via front USB
Remote Appβœ” iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevueβœ”
Ethernetβœ”
Ethernet Switchβœ–
Wi-Fiβœ” via Front USB (optional UWF-1 sold separately)
Bluetoothβœ–
HDBaseT Compatibleβœ–
Enhanced Audio Return Channel (eARC)βœ–
HDCP Version2.2
HDMI Inputs8 (1 front)
HDMI Outputs2 (simultaneous)
USB Input1 Front (for iPod/iPhone) and 1 Rear
USB DC Out Portβœ–
Analog Audio Line Inputs7 (1 front)
Analog Audio Line Outputsβœ–
Phono Inputβœ”
Optical Inputs3 (1 front)
Optical Outputsβœ–
Coaxial Inputs/Outputs3 / No
Composite Video Inputs5 (1 front)
Composite Video Outputs1
S-Video Inputsβœ–
S-Video Outputsβœ–
Component Video Inputs2
Component Video Outputs1
PC Inβœ”
Multi-Channel Inputβœ–
Analog Pre-Outs9.2
XLR Inputsβœ–
XLR Pre-outsβœ–
Front A/V InputsHDMI/MHL, USB, Composite Video, RCA Audio, Optical
Speaker A/Bβœ–
Headphone Outβœ” 6.3 mm
ZONES
Zones3
Powered Zonesβœ” 2 and 3
Zone 2 OutsRCA Line Out
Zone 3 OutsRCA Line Out
Whole House Modeβœ”
RS-232 Interfaceβœ”
+12V Trigger Output2 (Zone2, Zone 3)
Remote (IR) Input/Output1 / 1
MISC
On-Screen Displayβœ” Advanced "Home" GUI
Detachable Power Cordβœ”
uportβœ–
ONKYO-RI System Controlβœ”
RIHD (Remote Interactive Over HDMI)βœ”
Pre-Pro/Learning Remoteβœ” / βœ”
On Screen Remote Programmingβœ”
Bi-directional Remote Setup via GUIβœ”
Activity Based Remoteβœ”
Smart Grid-Readyβœ–
RADIO
Analog Tunerβœ” FM/AM
Presets40
Digital Radioβœ–
Internet Radioβœ” vTuner
Pandoraβœ”
Spotifyβœ”
Tidalβœ–
Deezerβœ–
Napsterβœ–
SiriusXM Internet Radioβœ”
CONSTRUCTION
Solid Aluminum Frontβœ–
Speaker Terminals11
Large Speaker Terminals11
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 120 V, 60 Hz
Independent Power Supplyβœ–
H.C.P.S. (High Current Power Supply)βœ” Massive High Power Transformer
Toroidal Transformerβœ–
Power Consumption8.1 A
No Sound Power95 W
Standby Power0.1 W
GENERAL
ECO Mode / Hybrid Standby Functionβœ”
Dimensions (W x H x D)435 mm x 198.5 mm x 435.5 mm
17-1/8" x 7-13/16" x 18-1/8"
Weight18.3 kg (40.3 lbs)
Warranty2 Years
SPECS
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)135 W (0.08% THD)
Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)125 W (0.7% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)230 W
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)180 W (1% THD)
Dynamic Power per Channel (3 Ω, Front)300 W
Dynamic Power per Channel (4 Ω, Front)250 W
Dynamic Power per Channel (8 Ω, Front)150 W
THD0.08% (20 Hz - 20 kHz, Half power)
Damping Factor60 (Front, 1 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)
Input Sensitivity and Impedance (Phono MM)2.5 mV/47 kΩ
Rated Preout Level and Impedance200 mV/470 Ω
Maximum Preout Level and Impedance4.6 V/470 Ω
Phono Overload70 mV (MM 1 kHz 0.5%)
S/N Ratio (Line, IHF-A)110 dB
S/N Ratio (Phono MM, IHF-A)80 dB
Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)
DSD Sampling Rates via HDMI2.8 MHz
DSD Sampling Rates via USB2.8 MHz
Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite)
Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
Ethernet Standard100BASE-TX
FM Frequency87.5 MHz - 107.9 MHz
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

Successor

In 2013 Onkyo TX-NR818 was replaced by TX-NR828. Let us now have a look at some important changes that the successor brought.


UPGRADES Onkyo TX-NR828 Onkyo TX-NR818
Phase-Matching Bass Boost βœ” βœ–
Video Signal Passthrough up to 4K/30p up to 1080p
AirPlay βœ” AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) βœ–
Wi-Fi βœ” βœ” via Front USB (optional UWF-1 sold separately)
Bluetooth βœ” βœ–
Independent Power Supply 2 βœ–

DOWNGRADES Onkyo TX-NR828 Onkyo TX-NR818
Independent Block Construction (Amp/Preprocessor) βœ– βœ”
Less Channel Processing 7.1 9.1
Less Advanced Auto Speaker Calibration System βœ” Audyssey MultEQ βœ” Audyssey MultEQ XT32
USB Input 1 (Front) 1 Front (for iPod/iPhone) and 1 Rear
Less Optical Inputs 2 3 (1 front)
Less Analog Pre-Outs 7.2 9.2

For more detailed comparison between the models please visit Onkyo TX-NR828 vs Onkyo TX-NR818.

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