Onkyo TX-NR818 vs Onkyo TX-NR809

      Onkyo TX-NR818

      Onkyo TX-NR809
      80
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      80
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      USA
      Others
      USA
      Others
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      Highlights

      • 7.2 Channels
      • 9.1 Channel Processing
      • 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™2 Plus Certified
      • 4K/30Hz Upscaling
      • Ethernet
      • Phono Input

      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™2 Plus Certified
      • 4K/30Hz Upscaling
      • Ethernet
      • Phono Input

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

      Table of Contents
      1. Overview
      2. Pros and Cons
      3. Advantage of Onkyo TX-NR818
      4. Advantage of Onkyo TX-NR809
      5. Common Strengths and Weaknesses
      6. Amplifier
      7. Speaker Configurations
      8. Immersive Audio Formats
      9. HDMI
      10. Inputs and Outputs
      11. Evaluations
      12. Specifications

      1. Overview

      Here we are comparing Onkyo TX-NR818 to Onkyo TX-NR809 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. Both receivers have 7 channel and equally powerful amplifiers.


      Onkyo TX-NR818 Onkyo TX-NR809

      Onkyo TX-NR818 was introduced in 2012. It is equipped with 7 channel amplifier with 135 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 9.1 maximum channel processing. It , passes 1080/60p and upscales up to 4K/30p (Marvell Qdeo) video signal.

      Onkyo TX-NR809 was introduced in 2011. It is equipped with 7 channel amplifier with 135 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It , passes 1080/60p and upscales up to 4K/30p (Marvell Qdeo) video signal.

      We evaluated Onkyo TX-NR818 and Onkyo TX-NR809 and gave both of them the score of 80 out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

      Onkyo TX-NR818

      Onkyo TX-NR809

      Amplifier
      92
      Amplifier
      93
      Audio Features
      79
      Audio Features
      76
      Video Features
      58
      Video Features
      58
      Connectivity
      84
      Connectivity
      86
      Zones
      89
      Zones
      87
      Radio
      90
      Radio
      91
      OVERALL
      80
      OVERALL
      80

      For more details about the ranking please go to    Evaluations section.

      2. Pros and Cons

      In this section we present pros and cons of Onkyo TX-NR818 and Onkyo TX-NR809.

      PROS

      Onkyo TX-NR818

      Onkyo TX-NR809

      •   High Power Output - 135 W
      •   Front Wide Channel Support
      •   THX™ Certification
      •   9.1 Channel Processing
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   8 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   High Power Output - 135 W
      •   Front Wide Channel Support
      •   THX™ Certification
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   Analog To HDMI Upconversion
      •   8 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Multi-Channel Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Digital Radio
      •   Pandora
      •   Spotify

      CONS

      Onkyo TX-NR818

      Onkyo TX-NR809

      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No Digital Radio
      •   No Tidal
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No Tidal


      And here are some specifications which fall into average criteria and are neither in PROs nor in CONs category:

      AVERAGE

      Onkyo TX-NR818

      Onkyo TX-NR809

      •   7.2 Channels
      •   Wi-Fi
      •   2 HDMI Outputs
      •   7.2 Channels
      •   7.1 Channel Processing
      •   Wi-Fi
      •   2 HDMI Outputs

      3. Advantage of Onkyo TX-NR818

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR818 over Onkyo TX-NR809.

      Check the Price

      Onkyo TX-NR818
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      Onkyo TX-NR818 vs Onkyo TX-NR809
      Independent Block Construction (Amp/Preprocessor) vs
      Digital Processing Crossover Network vs
      More Channel Processing 9.1 vs 7.1
      DTS Neo Neo:X vs Neo:6
      Music Playback via USB FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, Dolby TruHD, LPCM, AAC vs FLAC, WAV, WMA, WMA Lossless, Ogg, MP3, LPCM, AAC
      Higher Resolution Music Playback via USB up to 192 kHz vs up to 96 kHz
      High Resolution Audio Formats via USB FLAC, WAV, Apple Lossless, DSD, WMA Lossless, LPCM, AAC, Dolby TrueHD vs FLAC, WAV, WMA Lossless, LPCM, AAC
      DSD via USB 2-ch Input vs
      Dialog Normalization vs
      Dialogue Lift Screen Centered Dialog vs
      More Advanced Auto Speaker Calibration System Audyssey MultEQ XT32 vs Audyssey MultEQ XT
      MHL Input Front HDMI vs
      InstaPrevue Input Source Prevue vs
      More RCA Line Inputs 7 (1 front) vs 6 (1 front)
      More RCA Pre-Outs 9.2 vs 7.2
      More Powered Zones 2 and 3 vs 2
      SiriusXM vs

      4. Advantage of Onkyo TX-NR809

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR809 over Onkyo TX-NR818.

      Check the Price

      Onkyo TX-NR809
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      Onkyo TX-NR818 vs Onkyo TX-NR809
      PUSH-PULL Design vs
      More RCA Line Outputs vs 1
      Multi-Channel Input vs 7.1
      More Composite Video Outputs 1 vs 2
      More S-Video Inputs vs 4
      More S-Video Outputs vs 2
      uport vs
      Zone 2 Outs RCA Line Out vs RCA Pre/Line Out
      Zone 3 Outs RCA Line Out vs RCA Pre/Line Out
      Analog Tuner FM/AM vs FM/AM with RDS
      Digital Radio vs DAB/DAB+ Radio via optional UP-DT1 Tuner (sold separately)
      Napster vs
      Higher Power Output (6 Ω, 1 kHz, 2 channel driven, FTC) 125 W (0.7% THD) vs 160 W (0.1% THD)

      5. Common Strengths and Weaknesses

      We already listed pros and cons of each model. However, you may also find useful to look at their common strengths and weaknesses shown side-by-side.

      STRENGTHS Onkyo TX-NR818 Onkyo TX-NR809
        High Power Output135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Front Wide Channel Support
        THX™ Certification Select™2 Plus Select™2 Plus
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. Audyssey MultEQ XT32 Audyssey MultEQ XT
        Analog To HDMI Upconversion Component, Composite, PC Component, Composite, S-Video, PC
        Many HDMI Inputs8 (1 front)8 (1 front)
        USB Input1 Front (for iPod/iPhone) and 1 Rear1 Front (for iPod/iPhone) and 1 Rear
        Many RCA Line Inputs7 (1 front)6 (1 front)
        Phono Input
        RCA Pre-Outs9.27.2
        Composite Video Inputs5 (1 front)5 (1 front)
        Component Video Inputs22
        Ethernet
        Zones33
        Analog Tuner FM/AM FM/AM with RDS
        Pandora
        Spotify
      WEAKNESSES Onkyo TX-NR818 Onkyo TX-NR809
        No Dolby Atmos
        No Dolby Atmos Height Virtualization
        No DTS:X
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10
        No HDR10+
        No Dolby Vision
        No eARC
        No 8K Passthroughup to 1080pup to 1080p
        No Bluetooth
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No Tidal

      6. Amplifier

      Onkyo TX-NR818 Onkyo TX-NR809

      7 channel Amplifier: Onkyo TX-NR818 features 7 channel power amplifier. It is rated at 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

      7 channel Amplifier: Onkyo TX-NR809 features 7 channel power amplifier. It is rated at 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.
      • WRAT (Wide Range Amp Technology): Onkyo TX-NR818 and Onkyo TX-NR809 feature 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 and Onkyo TX-NR809 feature 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.

      THX™ Select™2 Plus certification

      Onkyo TX-NR818 and Onkyo TX-NR809 are THX™ Select™2 Plus certified. This means that they are 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.

      AMPLIFIER Onkyo TX-NR818 Onkyo TX-NR809
      Channels7.27.2
      Power Output135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry Linear Linear
      THX™ Certification Select™2 Plus Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)

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      Onkyo TX-NR818
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      7. Speaker Configurations

      Onkyo TX-NR818's and Onkyo TX-NR809's amplifiers can be assigned for different speaker configurations.

      • Configurations: Available configurations are:
      • Onkyo TX-NR818: 5.2, 7.2 with internal amplifier and 9.2 with addition of external 2 channel amplifier.
      • Onkyo TX-NR809: 5.2, 7.2 with internal amplifier.
      • Front Wide Channel support: With the presence of two front wide speakers you can enhance the front surround stage. The following speaker configurations are available for front wide channels:
      • Onkyo TX-NR818: 9.2.
      • Onkyo TX-NR809: 7.2.
      • 2-ch Bi-Amp: Both models are able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

      8. Immersive Audio Formats

      Audyssey DSX

      Onkyo TX-NR818 and Onkyo TX-NR809 support Audyssey DSX which 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.


      AUDIO DECODING Onkyo TX-NR818 Onkyo TX-NR809
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLIIz PLIIz
      Dolby Digital EX
      Surround EX also known as Dolby Digital Surround EX also known as Dolby Digital Surround EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:X Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES Discrete 6.1, Matrix 6.1 Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer

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      Onkyo TX-NR809
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      9. HDMI

      Onkyo TX-NR818 and Onkyo TX-NR809 come with 8 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

      • 1080/60p Passthrough: On both receivers all inputs pass up to 1080p video signal.
      • 4K Upscaling: Both receivers can upscale up to 4K/30p (Marvell Qdeo) from HDMI and analog sources.
      • Analog To HDMI Upconversion: Both receivers support analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
      • HDCP 2.2 Copy Protection: Onkyo TX-NR818 is HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.


      VIDEO FEATURES Onkyo TX-NR818 Onkyo TX-NR809
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 1080pup to 1080p
      Video Signal Upscaling up to 4K/30p (Marvell Qdeo) up to 4K/30p (Marvell Qdeo)

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      Onkyo TX-NR818
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      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR818 and Onkyo TX-NR809 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • 7.1 Multichannel Input: In case you have a high quality Blu-Ray or a DVD player with multichannel analog outputs you may connect it to a 7.1 multichannel analog inputs of Onkyo TX-NR809 and use high quality DACs of the player instead of the ones in the receiver.
      • Analog Pre-Outs: Onkyo TX-NR818 has 9.2 and Onkyo TX-NR809 has 7.2 preamplifier outputs which allow you to connect the receivers to the external power amplifiers. You may want to use a high quality external amplifier for certain channels, usually for front L/R and center, and use the receiver to power the rest. Also, Onkyo TX-NR818 has 9 channel processing but has only 7 channel amplifier, so it needs external amplifier connected to the analog pre-outs in order to reach its maximum speaker configuration.
      • Analog Line Inputs and Outputs: There are 7 pair of line inputs on Onkyo TX-NR818 and 6 pair of line inputs on Onkyo TX-NR809 for connecting sources with analog outputs. There is also 1 pair of line outputs on Onkyo TX-NR809.
      • Digital Inputs: 3 optical inputs and 3 coaxial inputs are available for digital audio connections on both receivers.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

      Video

      • HDMI:
      • Onkyo TX-NR818
        Inputs:         8 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Onkyo TX-NR809
        Inputs:         8 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-NR818
        Inputs:         5   Outputs: 1.
      • Onkyo TX-NR809
        Inputs:         5   Outputs: 2.
      • S-Video:
      • Onkyo TX-NR818
        Inputs:         0   Outputs: 0.
      • Onkyo TX-NR809
        Inputs:         4   Outputs: 2.
      • Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one. Both receivers support up to 1080p resolution on Component video connectors.
      • Onkyo TX-NR818
        Inputs:         2   Outputs: 1.
      • Onkyo TX-NR809
        Inputs:         2   Outputs: 1.

      Front A/V Inputs

      • Onkyo TX-NR818: HDMI/MHL, USB, Composite Video, RCA Audio, Optical
      • Onkyo TX-NR809: HDMI, USB, Composite Video, RCA Audio, Optical

      Onkyo TX-NR818

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      Onkyo TX-NR809

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      TERMINALS Onkyo TX-NR818 Onkyo TX-NR809
      HDMI Inputs8 (1 front)8 (1 front)
      HDMI Outputs2 (simultaneous)2 (simultaneous)
      8K Inputs
      USB Input1 Front (for iPod/iPhone) and 1 Rear1 Front (for iPod/iPhone) and 1 Rear
      USB DC Out Port
      Optical Inputs3 (1 front)3 (1 front)
      Optical Outputs
      Coaxial Inputs33
      RCA Line Inputs7 (1 front)6 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input 7.1
      RCA Pre-Outs9.27.2
      XLR Pre-outs
      Composite Video Inputs5 (1 front)5 (1 front)
      Composite Video Outputs12
      S-Video Inputs4
      S-Video Outputs2
      Component Video Inputs22
      Component Video Outputs11

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      Onkyo TX-NR809
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      11. Evaluations

      We evaluated Onkyo TX-NR818 and Onkyo TX-NR809 and gave both of them the score of 80 out of 100. We also gave separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new receiver is added to the database.


      Onkyo TX-NR818

      Onkyo TX-NR809

      OVERALL
      80
      OVERALL
      80

      Amplifier

      EXCELLENT
      92
      •   7.2 Channels
      •   High Power Output - 135 W
      •   THX™ Certification
      EXCELLENT
      93
      •   7.2 Channels
      •   High Power Output - 135 W
      •   THX™ Certification

      Audio Features

      GOOD
      79
      •   7.2 Channels
      •   Front Wide Channel Support
      •   9.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI
      GOOD
      76
      •   7.2 Channels
      •   Front Wide Channel Support
      •   7.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI

      Video Features

      AVERAGE
      58
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion
      AVERAGE
      58
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion

      Connectivity

      GOOD
      84
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   8 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      EXCELLENT
      86
      •   No eARC
      •   Wi-Fi
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   8 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Multi-Channel Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet

      Zones

      EXCELLENT
      89
      •   3 Zones
      EXCELLENT
      87
      •   3 Zones

      Radio

      EXCELLENT
      90
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal
      EXCELLENT
      91
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal

      12. Specifications

      GENERAL Onkyo TX-NR818 Onkyo TX-NR809
      BrandOnkyoOnkyo
      ModelTX-NR818TX-NR809
      TypeA/V ReceiverA/V Receiver
      CountryUSAOthers
      Release Year20122011
      PredecessorOnkyo TX-NR809
      SuccessorOnkyo TX-NR828 Onkyo TX-NR818
      AMPLIFIER Onkyo TX-NR818 Onkyo TX-NR809
      Channels7.27.2
      Power Output135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry Linear Linear
      THX™ Certification Select™2 Plus Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-NR818 Onkyo TX-NR809
      Digital Processing Crossover Network
      Digital Signal Processing (DSP) EngineAdvanced 32-Bit Processing DSP ChipAdvanced 32-Bit Processing DSP Chip
      DACBurr-BrownBurr-Brown
      DAC Specs192 kHz/24 Bit192 kHz/24 Bit
      Maximum Channel Processing9.17.1
      Air Studios Monitor Certification
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLIIz PLIIz
      Dolby Digital EX
      Surround EX also known as Dolby Digital Surround EX also known as Dolby Digital Surround EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:X Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES Discrete 6.1, Matrix 6.1 Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer
      PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      Music Playback via USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, Dolby TruHD, LPCM, AACFLAC, WAV, WMA, WMA Lossless, Ogg, MP3, LPCM, AAC
      High Resolution Music Playback via USB and/or Network up to 192 kHz up to 96 kHz
      High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, WMA Lossless, LPCM, AAC, Dolby TrueHDFLAC, WAV, WMA Lossless, LPCM, AAC
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      DSD via USB 2-ch Input
      DSD to PCM Converter
      USB DAC
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for All Audio Signals
      DTS Dialogue Control
      Dialog Enhancement
      Dialog Level Adjustment
      Dialog normalization
      Dialogue Lift Screen Centered Dialog
      Tone Control Front L/R Channels Front L/R Channels
      Compressed Music Enhancer Advanced Music Optimizer Advanced Music Optimizer
      High-resolution Music Enhancer
      THX Processing Mode
      Audyssey Dynamic EQ
      Audyssey Dynamic Volume
      Audyssey LFC
      Audyssey Sub EQ HT
      Audyssey DSX
      Phase-Matching Bass Boost
      Direct Mode
      Pure Audio Mode
      Pure Direct Analog Path Mode
      Virtual Speakers T-D (Theater-Dimensional) T-D (Theater-Dimensional)
      Independent Subwoofer Outputs
      CALIBRATION Onkyo TX-NR818 Onkyo TX-NR809
      Auto Speaker Calibration System with Mic. Audyssey MultEQ XT32 Audyssey MultEQ XT
      Audyssey App Support
      VIDEO FEATURES Onkyo TX-NR818 Onkyo TX-NR809
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.2
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 1080pup to 1080p
      Video Signal Upscaling up to 4K/30p (Marvell Qdeo) up to 4K/30p (Marvell Qdeo)
      Analog To HDMI Upconversion Component, Composite, PC Component, Composite, S-Video, PC
      Component Video Upscaling
      Analog to Analog Video conversion
      Component Video Maximum Resolution1080p1080p
      isf Certified Calibration Control
      CONNECTIVITY Onkyo TX-NR818 Onkyo TX-NR809
      Wi-Fi via Front USB (optional UWF-1 sold separately) via Front USB (optional UWF-1 sold separately)
      Bluetooth
      Works with Amazon Alexa
      Chromecast Built-In
      Works with SonoS
      DTS Play-Fi
      MHL Input Front HDMI
      DLNA 1.5
      AirPlay
      Apple Product Connection iPod and iPhone via front USB iPod and iPhone via front USB or optional UP-A1 Dock (sold separately)
      Remote App iPod touch/iPhone and Android-Powered Devices iPod touch/iPhone
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-NR818 Onkyo TX-NR809
      HDMI Inputs8 (1 front)8 (1 front)
      HDMI Outputs2 (simultaneous)2 (simultaneous)
      8K Inputs
      USB Input1 Front (for iPod/iPhone) and 1 Rear1 Front (for iPod/iPhone) and 1 Rear
      USB DC Out Port
      Optical Inputs3 (1 front)3 (1 front)
      Optical Outputs
      Coaxial Inputs33
      RCA Line Inputs7 (1 front)6 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input 7.1
      RCA Pre-Outs9.27.2
      XLR Pre-outs
      Composite Video Inputs5 (1 front)5 (1 front)
      Composite Video Outputs12
      S-Video Inputs4
      S-Video Outputs2
      Component Video Inputs22
      Component Video Outputs11
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMI/MHL, USB, Composite Video, RCA Audio, OpticalHDMI, USB, Composite Video, RCA Audio, Optical
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-NR818 Onkyo TX-NR809
      Number of Zones33
      Powered Zones 2 and 3 2
      Zone 2 OutsRCA Line OutRCA Pre/Line Out
      Zone 3 OutsRCA Line OutRCA Pre/Line Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output2 (Zone2, Zone 3)2 (Zone2, Zone 3)
      Remote (IR) Input/Output1 / 11 / 1
      MISCELLANEOUS Onkyo TX-NR818 Onkyo TX-NR809
      On-Screen Display Advanced "Home" GUI Advanced "Home" GUI
      ONKYO-RI System Control
      RIHD (Remote Interactive Over HDMI)
      Pre-Pro/Learning Remote / /
      On Screen Remote Programming
      Bi-directional Remote Setup via GUI
      Activity Based Remote
      Smart Grid-Ready
      RADIO Onkyo TX-NR818 Onkyo TX-NR809
      Analog Tuner FM/AM FM/AM with RDS
      Presets4040
      Digital Radio DAB/DAB+ Radio via optional UP-DT1 Tuner (sold separately)
      Internet Radio vTuner vTuner
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-NR818 Onkyo TX-NR809
      Solid Aluminum Front
      Speaker Terminals1111
      Large Speaker Terminals1111
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-NR818 Onkyo TX-NR809
      Power SupplyAC 120 V, 60 HzAC 220-240 V, 50/60 Hz
      Independent Power Supply
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer Massive High Power Transformer
      Toroidal Transformer
      Power Consumption8.1 A710 W
      No Sound Power95 W100 W
      Standby Power0.1 W0.3 W
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-NR818 Onkyo TX-NR809
      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"      		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)18.3 kg (40.3 lbs)
      SPECIFICATIONS Onkyo TX-NR818 Onkyo TX-NR809
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)135 W (0.08% THD)135 W (0.08% THD)
      Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)145 W (0.7% THD)
      Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)125 W (0.7% THD)160 W (0.1% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)230 W230 W
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)180 W (1% THD)180 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)300 W300 W
      Dynamic Power per Channel (4 Ω, Front)250 W250 W
      Dynamic Power per Channel (8 Ω, Front)150 W150 W
      THD0.08% (20 Hz - 20 kHz, Half power)0.08% (20 Hz - 20 kHz, Half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)200 mV/47 kΩ (Line)
      Input Sensitivity and Impedance (Phono MM)2.5 mV/47 kΩ2.5 mV/47 kΩ
      Rated Preout Level and Impedance200 mV/470 Ω200 mV/470 Ω
      Maximum Preout Level and Impedance4.6 V/470 Ω4.6 V/470 Ω
      Phono Overload70 mV (MM 1 kHz 0.5%)70 mV (MM 1 kHz 0.5%)
      S/N Ratio (Line, IHF-A)110 dB110 dB
      S/N Ratio (Phono MM, IHF-A)80 dB80 dB
      Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)
      DSD Sampling Rates via HDMI2.8 MHz2.8 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)      		1 Vp-p/75 Ω (Component and S-Video Y)
      0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
      1 Vp-p/75 Ω (Composite)
      0.25 Vp-p/75 Ω (S-Video C)
      Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)5 Hz - 100 MHz/+0 dB, -3 dB (Component)
      Ethernet Standard100BASE-TX100BASE-TX
      FM Frequency87.5 MHz - 107.9 MHz87.5 MHz - 108.0 MHz
      AM Frequency522/530 kHz - 1611/1710 kHz522/530 kHz - 1611/1710 kHz
      Warranty2 Years2 Years

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

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