Onkyo TX-RZ820 vs Pioneer VSX-831

      Onkyo TX-RZ820

      Pioneer VSX-831
      90
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      78
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      Australia
      Asia
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      Asia
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      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™ Certified
      • Dolby Atmos, DTS:X
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      Highlights

      • 5.2 Channels
      • 5.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough, 4K/30Hz Upscaling
      • Wi-Fi, Bluetooth, 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-RZ820
      4. Advantage of Pioneer VSX-831
      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-RZ820 to Pioneer VSX-831 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. The Onkyo TX-RZ820 has 7 channel and the Pioneer VSX-831 has 5 channel amplifiers with Onkyo TX-RZ820's being more powerful.


      Onkyo TX-RZ820 Pioneer VSX-831

      Onkyo TX-RZ820 was introduced in 2017. It is equipped with 7 channel amplifier with 130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz video signal.

      Pioneer VSX-831 was introduced in 2017. It is equipped with 5 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It , passes 4K/60Hz and upscales up to 4K video signal.

      We evaluated Onkyo TX-RZ820 and Pioneer VSX-831 and gave them scores of 90 and 78 out of 100 recpectively. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

      Onkyo TX-RZ820

      Pioneer VSX-831

      Amplifier
      92
      Amplifier
      77
      Audio Features
      86
      Audio Features
      71
      Video Features
      94
      Video Features
      92
      Connectivity
      86
      Connectivity
      80
      Zones
      88
      Zones
      55
      Radio
      90
      Radio
      88
      OVERALL
      90
      OVERALL
      78

      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-RZ820 and Pioneer VSX-831.

      PROS

      Onkyo TX-RZ820

      Pioneer VSX-831

      •   High Power Output - 130 W
      •   THX™ Certification
      •   Dolby Atmos
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Spotify
      •   Tidal
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   Chromecast Built-In
      •   USB Input
      •   Phono Input
      •   Composite Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Pandora
      •   Spotify

      CONS

      Onkyo TX-RZ820

      Pioneer VSX-831

      •   No Front Wide Channel Support
      •   No Dolby Atmos Height Virtualization
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No Digital Radio
      •   No Pandora
      •   Few Channels - 5.2
      •   Low Power Output - 80 W
      •   5.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   1 HDMI Outputs
      •   0 8K Input
      •   Few RCA Line Inputs
      •   No RCA Pre-Outs
      •   No Zones
      •   No Digital Radio
      •   No Tidal


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

      AVERAGE

      Onkyo TX-RZ820

      Pioneer VSX-831

      •   7.2 Channels
      •   7.1 Channel Processing
      •   3 HDMI Outputs
      •   Bluetooth 4․1 + LE
      •   6 HDMI Inputs
      •   Bluetooth 4․1 + LE

      3. Advantage of Onkyo TX-RZ820

      This section shows those features and specifications which are the reason to choose Onkyo TX-RZ820 over Pioneer VSX-831.

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      Onkyo TX-RZ820
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      Onkyo TX-RZ820 vs Pioneer VSX-831
      More Channels 7.2 vs 5.2
      Higher Power Output 130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      THX™ Certification Select™ (previously known as Select2) vs
      Certified 4 Ω Performance vs
      More Channel Processing 7.1 vs 5.1
      Dolby Atmos vs
      Dolby Surround Upmixer vs
      DTS:X vs
      DTS Neural:X vs
      DTS-ES vs
      Music Playback via USB FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD vs MP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
      High Resolution Audio Formats via USB FLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD vs Apple Lossless, WAV, FLAC, AIFF, DSD
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio vs
      Virtual Speakers T-D (Theater-Dimensional) vs
      HLG vs
      DTS Play-Fi vs
      DLNA 1.5 vs
      More HDMI Inputs 7 (1 front) vs 6
      More HDMI Outputs 2 (1 Main, 1 Sub/Zone2) vs 1
      More Optical Inputs 2 vs 1
      More RCA Line Inputs 6 vs 3 (1 front)
      More RCA Pre-Outs 7.2 vs 0.2
      More Component Video Inputs 2 vs
      Front A/V Inputs HDMI vs USB, Mini-Jack
      Detachable Power Cord vs
      More Zones 3 vs 1
      RS-232C Interface vs
      +12V Trigger Output 1 (MAIN, 100 mA) vs
      Remote (IR) Input/Output 1 / 0 vs 0 / 0
      Tidal vs
      Deezer vs
      Solid Aluminum Front vs
      More Speaker Terminals 11 vs 5
      More Large Speaker Terminals 11 vs 5
      Bigger Power Supply 710 W vs 390 W
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) [] vs 80 W (0.08% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 215 W (10% THD) vs 160 W (10% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 180 W (1% THD) vs 130 W (1% THD)
      Higher Dynamic Power per Channel, 3 Ω, Front) 300 W vs 160 W
      Higher Dynamic Power per Channel, 4 Ω, Front) 250 W vs 125 W
      Higher Dynamic Power per Channel, 8 Ω, Front) 150 W vs 85 W
      Higher DSD Sampling Rate via USB 2.8 MHz, 5.6 MHz, 11.2 MHz vs 5.6 MHz, 2.8 MHz
      Longer Warranty 3 Years vs 1 Year Parts & Labor

      4. Advantage of Pioneer VSX-831

      This section shows those features and specifications which are the reason to choose Pioneer VSX-831 over Onkyo TX-RZ820.

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      Pioneer VSX-831
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      Onkyo TX-RZ820 vs Pioneer VSX-831
      Dolby Pro Logic vs PLII
      DTS Neo vs Neo:6
      More Tone Control Channels Front L/R Channels vs All Channels
      Video Signal Upscaling vs up to 4K
      Pandora vs

      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-RZ820 Pioneer VSX-831
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ MCACC
        HDR10
        Dolby Vision
        New HDCP Version2.22.2
        Analog To HDMI Upconversion Component**, Composite Composite
        Wi-Fi
        Bluetooth SBC, AAC
        Chromecast Built-In
        USB Input1 (Rear)1 Front
        Phono Input
        Composite Video Inputs22
        Ethernet
        Analog Tuner FM/AM with RDS FM/AM with RDS
        Spotify
      WEAKNESSES Onkyo TX-RZ820 Pioneer VSX-831
        No Dolby Atmos Height Virtualization
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No eARC
        No 8K Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (4:4:4 24-bit)
      4K/60p (4:2:0 36-bit)
      4K/24p (4:4:4 36-bit)
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No Digital Radio

      6. Amplifier

      Onkyo TX-RZ820 Pioneer VSX-831

      7 channel Amplifier: Onkyo TX-RZ820 features 7 channel power amplifier. It is rated at 130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

      5 channel Discrete Direct Energy Amplifier: Pioneer VSX-831 features 5 channel power amplifier with Discrete Direct Energy design. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

        THX™ Select™ (previously known as Select2) certification

        Onkyo TX-RZ820 is THX™ Select™ (previously known as Select2) certified. 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.

        AMPLIFIER Onkyo TX-RZ820 Pioneer VSX-831
        Channels7.25.2
        Power Output130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        THX™ Certification Select™ (previously known as Select2)
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability

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        Onkyo TX-RZ820
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        7. Speaker Configurations

        Onkyo TX-RZ820's and Pioneer VSX-831's amplifiers can be assigned for different speaker configurations.

        • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
        • Onkyo TX-RZ820: 5.2.2 with internal amplifier.
        • Pioneer VSX-831: Not supported.
        • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
        • Onkyo TX-RZ820: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
        • Pioneer VSX-831: Not supported.
        • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
        • Onkyo TX-RZ820: 5.2, 7.2 with internal amplifier.
        • Pioneer VSX-831: 5.2 with internal amplifier.
        • 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

        Dolby Atmos

        Onkyo TX-RZ820 supports Dolby Atmos.

        • Dolby Surround Upmixer: Onkyo TX-RZ820 supports Dolby Surround Upmixer. 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

        Onkyo TX-RZ820 supports DTS:X.

        • DTS Neural:X: Onkyo TX-RZ820 supports DTS Neural:X which is an advanced 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.
        • DTS Dialog Control: Onkyo TX-RZ820 supports DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.
        AUDIO DECODING Onkyo TX-RZ820 Pioneer VSX-831
        Dolby Atmos
        Dolby Atmos Height Virtualization
        Dolby Atmos Music
        Dolby TrueHD
        Dolby Digital Plus
        Dolby Surround Upmixer
        Dolby Pro Logic PLII
        Dolby Digital EX
        DTS:X
        DTS Neural:X
        DTS Virtual:X
        DTS Neo Neo:6
        DTS-HD Master Audio
        DTS-HD High Resolution Audio
        DTS 96/24
        DTS Express
        DTS-ES
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer

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        Pioneer VSX-831
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        9. HDMI

        Onkyo TX-RZ820 comes with 7 HDMI inputs. It has 2 outputs - 1 Main and 1 Sub/Zone2.

        Pioneer VSX-831 comes with 6 HDMI inputs. It has 1 output.

        • 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
        • 4K Upscaling on Pioneer VSX-831: It can upscale up to 4K 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.
        • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on both models).
        • HDCP 2.2 Copy Protection: Both receivers are 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.

        HDR (High Dynamic Range)

        Onkyo TX-RZ820 supports HDR10, Dolby Vision and Hybrid Log-Gamma.

        Pioneer VSX-831 supports HDR10 and Dolby Vision. High dynamic range video has greater dynamic range than standard dynamic range (SDR) video with brighter whites and deeper blacks. The result is greater contrast and more details in dark and bright areas, better color and depth.



        VIDEO FEATURES Onkyo TX-RZ820 Pioneer VSX-831
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        HDCP Version2.22.2
        QMS (Quick Media Switching)
        ALLM (Auto Low Latency Mode)
        VRR (Variable Refresh Rate)
        QFT (Quick Frame transport)
        3-D Ready
        Video Signal Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (4:4:4 24-bit)
        4K/60p (4:2:0 36-bit)
        4K/24p (4:4:4 36-bit)
        Video Signal Upscaling up to 4K

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        Onkyo TX-RZ820
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        10. Inputs and Outputs

        Audio

        • Phono Input: There is an MM phono input on Onkyo TX-RZ820 and Pioneer VSX-831 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
        • Analog Pre-Outs: Onkyo TX-RZ820 has 7.2 preamplifier outputs which allows you to connect the receiver to the external power amplifier. 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.
        • Analog Line Inputs: There are 6 pair of line inputs on Onkyo TX-RZ820 and 3 pair of line inputs on Pioneer VSX-831 for connecting sources with analog outputs.
        • Digital Inputs: 2 optical inputs and 1 coaxial input are available on Onkyo TX-RZ820 and 1 optical input and 1 coaxial input are available on Pioneer VSX-831 for digital audio connections.
        • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

        Video

        • HDMI:
        • Onkyo TX-RZ820
          Inputs:           7 (1 front)   Outputs: 2 (1 Main, 1 Sub/Zone2)
          8K Inputs: 0.
        • Pioneer VSX-831
          Inputs:           6   Outputs: 1
          8K Inputs: 0.
        • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
        • Onkyo TX-RZ820
          Inputs:           2   Outputs: 0.
        • Pioneer VSX-831
          Inputs:           2   Outputs: 0.
        • 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.
        • Onkyo TX-RZ820 supports up to 480i/576i resolution on Component video connectors. resolution on Component video connectors.
        • Onkyo TX-RZ820
          Inputs:           2   Outputs: 0.
        • Pioneer VSX-831
          Inputs:           0   Outputs: 0.

        Front A/V Inputs

        • Onkyo TX-RZ820: HDMI
        • Pioneer VSX-831: USB, Mini-Jack

        Onkyo TX-RZ820

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        Pioneer VSX-831

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        TERMINALS Onkyo TX-RZ820 Pioneer VSX-831
        HDMI Inputs7 (1 front)6
        HDMI Outputs2 (1 Main, 1 Sub/Zone2)1
        8K Inputs
        USB Input1 (Rear)1 Front
        USB DC Out Port
        Optical Inputs21
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs63 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs7.20.2
        XLR Pre-outs
        Composite Video Inputs22
        Composite Video Outputs
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs

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        Pioneer VSX-831
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        11. Evaluations

        We evaluated Onkyo TX-RZ820 and Pioneer VSX-831 and gave them scores of 90 and 78 out of 100 recpectively. 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-RZ820

        Pioneer VSX-831

        OVERALL
        90
        OVERALL
        78

        Amplifier

        EXCELLENT
        92
        •   7.2 Channels
        •   High Power Output - 130 W
        •   THX™ Certification
        GOOD
        77
        •   Few Channels - 5.2
        •   Low Power Output - 80 W

        Audio Features

        EXCELLENT
        86
        •   7.2 Channels
        •   No Front Wide Channel Support
        •   7.1 Channel Processing
        •   Dolby Atmos
        •   No Dolby Atmos Height Virtualization
        •   DTS:X
        •   No IMAX Enhanced
        •   No Auro 3D with Auro-Matic Upmixer
        •   DSD via HDMI
        GOOD
        71
        •   Few Channels - 5.2
        •   5.1 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

        EXCELLENT
        94
        •   HDR10
        •   No HDR10+
        •   Dolby Vision
        •   No 8K Passthrough
        •   Analog To HDMI Upconversion
        EXCELLENT
        92
        •   HDR10
        •   No HDR10+
        •   Dolby Vision
        •   No 8K Passthrough
        •   Analog To HDMI Upconversion

        Connectivity

        EXCELLENT
        86
        •   No eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Does not Work with Amazon Alexa
        •   Chromecast Built-In
        •   7 HDMI Inputs
        •   3 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   Many RCA Line Inputs
        •   Phono Input
        •   RCA Pre-Outs
        •   Composite Video Inputs
        •   Component Video Inputs
        •   Ethernet
        •   Bluetooth 4․1 + LE
        GOOD
        80
        •   No eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Does not Work with Amazon Alexa
        •   Chromecast Built-In
        •   6 HDMI Inputs
        •   1 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   Few RCA Line Inputs
        •   Phono Input
        •   No RCA Pre-Outs
        •   Composite Video Inputs
        •   Ethernet
        •   Bluetooth 4․1 + LE

        Zones

        EXCELLENT
        88
        •   3 Zones
        AVERAGE
        55
        •   No Zones

        Radio

        EXCELLENT
        90
        •   Analog Tuner
        •   No Pandora
        •   Spotify
        •   Tidal
        EXCELLENT
        88
        •   Analog Tuner
        •   Pandora
        •   Spotify
        •   No Tidal

        12. Specifications

        GENERAL Onkyo TX-RZ820 Pioneer VSX-831
        BrandOnkyoPioneer
        ModelTX-RZ820VSX-831
        TypeA/V ReceiverA/V Receiver
        CountryAustraliaAsia
        Release Year20172017
        PredecessorOnkyo TX-RZ810 Pioneer VSX-830-K
        SuccessorOnkyo TX-RZ830 Pioneer VSX-832
        AMPLIFIER Onkyo TX-RZ820 Pioneer VSX-831
        Channels7.25.2
        Power Output130 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Front Wide Channel Support
        Amplifier DesignDiscrete Direct Energy
        Dynamic Audio Amplification
        Non-Phase Shift Amplifier
        VLSC (Vector Linear Shaping Circuitry) All Channels
        Optimum Gain Volume Circuitry
        THX™ Certification Select™ (previously known as Select2)
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Discrete Output Stage Circuitry
        Independent Block Construction (Amp/Preprocessor)
        Bi-amp Capability
        BTL (Bridged Transless or Bridging)
        AUDIO FEATURES Onkyo TX-RZ820 Pioneer VSX-831
        Digital Signal Processing (DSP) Engine32-bit Digital Signal Processing EnginesCirrus Logic (Quad Core) x 1
        DACAKM AK4458AKM AK4458
        DAC Specs384 kHz/32 Bit384 kHz/32 Bit
        Maximum Channel Processing7.15.1
        Air Studios Monitor Certification
        Dolby Atmos
        Dolby Atmos Height Virtualization
        Dolby Atmos Music
        Dolby TrueHD
        Dolby Digital Plus
        Dolby Surround Upmixer
        Dolby Pro Logic PLII
        Dolby Digital EX
        THX Listening Modes
        Surround EX
        DTS:X
        DTS Neural:X
        DTS Virtual:X
        DTS Neo Neo:6
        DTS-HD Master Audio
        DTS-HD High Resolution Audio
        DTS 96/24
        DTS Express
        DTS-ES
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer
        PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Network Audio FormatsFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM
        Music Playback via USBFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHDMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
        High Resolution Music Playback via USB and/or Network up to 192 kHz 64, 88.2, 96, 176.4, 192 kHz/24 bit
        High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHDApple Lossless, WAV, FLAC, AIFF, DSD
        Gapless Playback
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        DSD via USB 2-ch Input 2-ch Input
        DSD to PCM Converter
        USB DAC
        Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
        Auto Level Control
        DTS Dialogue Control
        Dialog Enhancement
        Dialog normalization
        Dialogue Lift
        Sound Retriever Advanced (2-Channel)
        Sound Retriever AIR
        Digital noise Reduction
        Tone Control Front L/R Channels All Channels
        Compressed Music Enhancer Advanced Music Optimizer (bluetooth included) Advanced Sound Retriever
        High-resolution Music Enhancer
        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
        Pure Direct Mode
        Auto Surround
        Optimum Surround
        Advanced Surround12
        Wide Surround
        Front Stage Surround Advance
        Headphone Surround
        Virtual Speakers T-D (Theater-Dimensional)
        Virtual Depth
        Independent Subwoofer Outputs
        CALIBRATION Onkyo TX-RZ820 Pioneer VSX-831
        Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ MCACC
        Manual MCACC
        MCACC Memory1
        Phase Control
        Auto Phase Control Plus
        Full Band Phase Control
        Standing Wave Control
        EQ Bands9-Band
        Symmetric EQ
        X-Curve
        Distance Adjustment0.1 feet
        Precision Distance
        Polarity Check
        Auto Subwoofer Crossover
        VIDEO FEATURES Onkyo TX-RZ820 Pioneer VSX-831
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        HDCP Version2.22.2
        QMS (Quick Media Switching)
        ALLM (Auto Low Latency Mode)
        VRR (Variable Refresh Rate)
        QFT (Quick Frame transport)
        3-D Ready
        Video Signal Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (4:4:4 24-bit)
        4K/60p (4:2:0 36-bit)
        4K/24p (4:4:4 36-bit)
        Video Signal Upscaling up to 4K
        Analog To HDMI Upconversion Component**, Composite Composite
        Component Video Upscaling
        Analog to Analog Video conversion
        Component Video Maximum Resolution480i/576i
        Stream Smoother
        Pure Cinema
        Video Parameter Adjustments
        Triple HD noise Reduction
        Super Resolution
        isf Certified Calibration Control
        CONNECTIVITY Onkyo TX-RZ820 Pioneer VSX-831
        Wi-Fi
        Bluetooth SBC, AAC
        Works with Amazon Alexa
        Chromecast Built-In
        Works with SonoS
        DTS Play-Fi
        MHL Input
        DLNA 1.5
        AirPlay AirPlay AirPlay
        Apple Product Connection iPod, iPhone and iPad iPod, iPhone and iPad (Airplay only)
        Remote AppOnkyo Remote App for iPod touch/iPhone and Android-Powered Devices iControlAV5 (for iOS and Android)
        InstaPrevue Input Source Prevue
        TERMINALS Onkyo TX-RZ820 Pioneer VSX-831
        HDMI Inputs7 (1 front)6
        HDMI Outputs2 (1 Main, 1 Sub/Zone2)1
        8K Inputs
        USB Input1 (Rear)1 Front
        USB DC Out Port
        Optical Inputs21
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs63 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs7.20.2
        XLR Pre-outs
        Composite Video Inputs22
        Composite Video Outputs
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs
        Ethernet
        Ethernet Switch
        PC In
        Front A/V InputsHDMIUSB, Mini-Jack
        Speaker A/B
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        uport
        adapterport
        ZONES Onkyo TX-RZ820 Pioneer VSX-831
        Number of Zones31
        Powered Zones 2 (and Zone 2 A/B)
        Zone 2 OutsHDMI, RCA Pre/Line Out
        Zone 3 OutsRCA Pre/Line Out
        Whole House Mode
        RS-232C Interface
        +12V Trigger Output1 (MAIN, 100 mA)
        Remote (IR) Input/Output1 / 00 / 0
        MISCELLANEOUS Onkyo TX-RZ820 Pioneer VSX-831
        On-Screen Display Graphical User Interface with Overlaid On-Screen Display (OSD) via HDMIIcon-based Graphical User Interface (GUI)
        AV Navigator
        IP Control
        PreAmp Mode
        Versatile Speaker Configuration
        FL Dimmer
        Function Rename
        ONKYO-RI System Control
        RIHD (Remote Interactive Over HDMI)
        Pre-Pro/Learning Remote /
        Smart Grid-Ready
        RADIO Onkyo TX-RZ820 Pioneer VSX-831
        Analog Tuner FM/AM with RDS FM/AM with RDS
        Presets4040
        Digital Radio
        Internet Radio TuneIn TuneIn
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Onkyo TX-RZ820 Pioneer VSX-831
        Front PanelBrushed
        Solid Aluminum Front
        Speaker Terminals115
        Large Speaker Terminals115
        Color-Coded Speaker Terminals
        Transparent High-Grade Speaker Terminals
        3D Space Frame Construction
        Gold plated RCA terminals
        POWER Onkyo TX-RZ820 Pioneer VSX-831
        Power SupplyAC 220-240 V, 50/60 HzAC 220-240 V, 50/60 Hz
        H.C.P.S. (High Current Power Supply) EI Transformer
        Toroidal Transformer
        Low Leakage Flux Power Transformer
        Transformer Stabilizer
        Power Consumption710 W390 W
        No Sound Power70 W45 W
        Standby Power0.15 W0.15 W
        Capacitor Bank15,000 µF
        ECO Mode / Hybrid Standby Function
        Auto Power off
        PHYSICAL Onkyo TX-RZ820 Pioneer VSX-831
        Dimensions (W x H x D)435 mm x 201 mm x 395 mm
        17-1/8" x 7-15/16" x 15-9/16"        		435 mm x 173 mm x 370.5 mm
        17-1/8" x 6-13/16" x 14-9/16"
        Weight14 kg (30.9 lbs)9.2 kg (20.3 lbs)
        SPECIFICATIONS Onkyo TX-RZ820 Pioneer VSX-831
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)
        Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)140 W (1% THD)
        Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)215 W (10% THD)160 W (10% THD)
        Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)180 W (1% THD)130 W (1% THD)
        Dynamic Power per Channel (3 Ω, Front)300 W160 W
        Dynamic Power per Channel (4 Ω, Front)250 W125 W
        Dynamic Power per Channel (8 Ω, Front)150 W85 W
        THD0.08% (20 Hz - 20 kHz, Half power)
        Input Sensitivity and Impedance (Line)200 mV/47 kΩ (1 kHz, 100 W/8 Ω)200 mV/47 kΩ
        Input Sensitivity and Impedance (Phono MM)3.5 mV/47 kΩ3.5 mV/47 kΩ
        Rated Preout Level and Impedance1 V/320 Ω
        Rated Headphone Jack Output Level and Impedance330 Ω330 Ω
        Rated Headphone Power Output85 mW (32 Ω, 1 kHz, 10% THD)85 mW (32 Ω, 1 kHz, 10% THD)
        Phono Overload70 mV (MM, 1 kHz 0.5% Direct)70 mV (MM, 1 kHz, 0.5%)
        S/N Ratio (Line, IHF-A)106 dB106 dB
        S/N Ratio (Phono MM, IHF-A)80 dB80 dB
        Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (Direct/Pure Audio)10 Hz - 100 kHz/+1 dB, -3 dB (Pure Direct)
        DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
        DSD Sampling Rates via USB2.8 MHz, 5.6 MHz, 11.2 MHz5.6 MHz, 2.8 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 (Composite)
        Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
        Ethernet Standard10BASE-T/100BASE-TX10BASE-T/100BASE-TX
        Wi-Fi StandardIEEE 802.11 a/b/g/nIEEE 802.11 a/b/g/n
        Wi-Fi Terminal Frequency5 GHz, 2.4 GHzDual band 2.4 GHz, 5 GHz
        Bluetooth Version4․1 + LE4․1 + LE
        Bluetooth Frequency2.4 GHz2.4 GHz
        HDMI TerminalType A (19-pin)
        HDMI Output Type5 V, 55 mA
        USB TerminalVer. 2.0, 5 V, 1 AUSB2.0 (Type A) 5 V, 1 A
        FM Frequency87.5 MHz - 108.0 MHz87.5 MHz - 108.0 MHz
        AM Frequency522/530 kHz - 1611/1710 kHz522/530 kHz - 1611/1710 kHz
        Warranty3 Years1 Year Parts & Labor

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

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