Onkyo TX-RZ820 vs Onkyo TX-SR373

      Onkyo TX-RZ820

      Onkyo TX-SR373
      90
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      69
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      Australia
      Asia
      North America
      Europe
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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
      • Bluetooth

      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 Onkyo TX-SR373
      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 Onkyo TX-SR373 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 Onkyo TX-SR373 has 5 channel amplifiers with Onkyo TX-RZ820's being more powerful.


      Onkyo TX-RZ820 Onkyo TX-SR373

      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.

      Onkyo TX-SR373 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 video signal.

      We evaluated Onkyo TX-RZ820 and Onkyo TX-SR373 and gave them scores of 90 and 69 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

      Onkyo TX-SR373

      Amplifier
      92
      Amplifier
      71
      Audio Features
      86
      Audio Features
      62
      Video Features
      94
      Video Features
      90
      Connectivity
      86
      Connectivity
      62
      Zones
      88
      Zones
      55
      Radio
      90
      Radio
      59
      OVERALL
      90
      OVERALL
      69

      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 Onkyo TX-SR373.

      PROS

      Onkyo TX-RZ820

      Onkyo TX-SR373

      •   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
      •   Bluetooth
      •   USB Input
      •   Composite Video Inputs
      •   Analog Tuner

      CONS

      Onkyo TX-RZ820

      Onkyo TX-SR373

      •   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
      •   No Front Wide Channel Support
      •   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
      •   No Wi-Fi
      •   Does not Work with Amazon Alexa
      •   4 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   Few RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Ethernet
      •   No Zones
      •   No Digital Radio
      •   No Pandora
      •   No Spotify
      •   No Tidal
      •   Bluetooth 3.0


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

      AVERAGE

      Onkyo TX-RZ820

      Onkyo TX-SR373

      •   7.2 Channels
      •   7.1 Channel Processing
      •   3 HDMI Outputs
      •   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 Onkyo TX-SR373.

      Check the Price

      Onkyo TX-RZ820
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      Onkyo TX-RZ820 vs Onkyo TX-SR373
      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)
      Non-Phase Shift Amplifier vs
      VLSC (Vector Linear Shaping Circuitry) All Channels vs
      Optimum Gain Volume Circuitry vs
      THX™ Certification Select™ (previously known as Select2) vs
      Certified 4 Ω Performance vs
      Bi-amp capability vs
      Higher DAC Specs 384 kHz/32 Bit vs 192 kHz/24 Bit
      More Channel Processing 7.1 vs 5.1
      Dolby Atmos vs
      Dolby Surround Upmixer vs
      DTS:X vs
      DTS Neural:X vs
      DTS Express vs
      DTS-ES vs
      Music Playback via USB FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD vs WMA, MP3, AAC
      Higher Resolution Music Playback via USB up to 192 kHz vs
      DSD via HDMI 2-ch/Multi-ch Input vs 2-ch
      DSD via USB 2-ch Input vs
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio vs
      DTS Dialog Control vs
      Dialog Normalization vs
      Phase-Matching Bass Boost vs
      Pure Audio Mode vs
      Virtual Speakers T-D (Theater-Dimensional) vs
      HLG vs
      Analog To HDMI Upconversion Component**, Composite vs
      Wi-Fi vs
      Chromecast Built-In vs
      DTS Play-Fi vs
      DLNA 1.5 vs
      AirPlay AirPlay vs
      Remote Controll App Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices vs
      More HDMI Inputs 7 (1 front) vs 4
      More HDMI Outputs 2 (1 Main, 1 Sub/Zone2) vs 1
      More Optical Inputs 2 vs 1
      More RCA Line Inputs 6 vs 3
      Phono Input vs
      More RCA Pre-Outs 7.2 vs 0.2
      More Component Video Inputs 2 vs
      Ethernet vs
      Front A/V Inputs HDMI vs USB
      Detachable Power Cord vs
      More Zones 3 vs 1
      Whole House Mode vs
      RS-232C Interface vs
      +12V Trigger Output 1 (MAIN, 100 mA) vs 0
      Remote (IR) Input/Output 1 / 0 vs 0 / 0
      RIHD (Remote Interactive Over HDMI) vs
      Analog Tuner FM/AM with RDS vs FM/AM
      More Presets 40 vs 30
      Internet Radio TuneIn vs
      Spotify vs
      Tidal vs
      Deezer vs
      Solid Aluminum Front vs
      More Speaker Terminals 11 vs 5
      More Large Speaker Terminals 11 vs 2
      H.C.P.S. (High Current Power Supply) EI Transformer vs
      Bigger Power Supply 710 W vs 210 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 155 W (10% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 180 W (1% THD) vs 140 W (1% THD)
      Newer Bluetooth Version 4․1 + LE vs 3.0
      Wider AM Frequency Range 522/530 kHz - 1611/1710 kHz vs 530 kHz - 1700 kHz
      Longer Warranty 3 Years vs 2 Years

      4. Advantage of Onkyo TX-SR373

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR373 over Onkyo TX-RZ820.

      Check the Price

      Onkyo TX-SR373
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      Onkyo TX-RZ820 vs Onkyo TX-SR373
      Dolby Pro Logic vs PLII
      DTS Neo vs Neo:6
      More Composite Video Outputs vs 1
      Lower THD 0.08% (20 Hz - 20 kHz, Half power) vs 0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)

      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 Onkyo TX-SR373
        DSD via HDMI 2-ch/Multi-ch Input 2-ch
        Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ AccuEQ
        HDR10
        Dolby Vision
        New HDCP Version2.22.2
        Bluetooth SBC, AAC SBC, AAC
        USB Input1 (Rear)1 (Front)
        Composite Video Inputs22
        Analog Tuner FM/AM with RDS FM/AM
      WEAKNESSES Onkyo TX-RZ820 Onkyo TX-SR373
        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 Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (4:4:4)
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No Digital Radio
        No Pandora

      6. Amplifier

      Onkyo TX-RZ820 Onkyo TX-SR373

      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 Amplifier: Onkyo TX-SR373 features 5 channel power amplifier. 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 Onkyo TX-SR373
        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
        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)

        Check the Price

        Onkyo TX-RZ820
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        7. Speaker Configurations

        Onkyo TX-RZ820's and Onkyo TX-SR373'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.
        • Onkyo TX-SR373: 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.
        • Onkyo TX-SR373: 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.
        • Onkyo TX-SR373: 5.2 with internal amplifier.
        • Bi-Amp: Onkyo TX-RZ820 is 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 Onkyo TX-SR373
        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
        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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        Onkyo TX-SR373
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        9. HDMI

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

        Onkyo TX-SR373 comes with 4 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.
        • Analog To HDMI Upconversion: Onkyo TX-RZ820 supports 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.

        Onkyo TX-SR373 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 Onkyo TX-SR373
        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)
        Video Signal Upscaling

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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 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 Onkyo TX-SR373 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 Onkyo TX-SR373 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.
        • Onkyo TX-SR373
          Inputs:           4   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.
        • Onkyo TX-SR373
          Inputs:           2   Outputs: 1.
        • 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.
        • Onkyo TX-SR373
          Inputs:           0   Outputs: 0.

        Front A/V Inputs

        • Onkyo TX-RZ820: HDMI
        • Onkyo TX-SR373: USB

        Onkyo TX-RZ820

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        Onkyo TX-SR373

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        TERMINALS Onkyo TX-RZ820 Onkyo TX-SR373
        HDMI Inputs7 (1 front)4
        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
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs7.20.2
        XLR Pre-outs
        Composite Video Inputs22
        Composite Video Outputs1
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs

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        Onkyo TX-SR373
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        11. Evaluations

        We evaluated Onkyo TX-RZ820 and Onkyo TX-SR373 and gave them scores of 90 and 69 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

        Onkyo TX-SR373

        OVERALL
        90
        OVERALL
        69

        Amplifier

        EXCELLENT
        92
        •   7.2 Channels
        •   High Power Output - 130 W
        •   THX™ Certification
        GOOD
        71
        •   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
        AVERAGE
        62
        •   Few Channels - 5.2
        •   No Front Wide Channel Support
        •   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
        90
        •   HDR10
        •   No HDR10+
        •   Dolby Vision
        •   No 8K Passthrough

        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
        AVERAGE
        62
        •   No eARC
        •   New HDCP Version
        •   No Wi-Fi
        •   Bluetooth
        •   Does not Work with Amazon Alexa
        •   4 HDMI Inputs
        •   1 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   Few RCA Line Inputs
        •   No Phono Input
        •   No RCA Pre-Outs
        •   Composite Video Inputs
        •   No Ethernet
        •   Bluetooth 3.0

        Zones

        EXCELLENT
        88
        •   3 Zones
        AVERAGE
        55
        •   No Zones

        Radio

        EXCELLENT
        90
        •   Analog Tuner
        •   No Pandora
        •   Spotify
        •   Tidal
        AVERAGE
        59
        •   Analog Tuner
        •   No Pandora
        •   No Spotify
        •   No Tidal

        12. Specifications

        GENERAL Onkyo TX-RZ820 Onkyo TX-SR373
        BrandOnkyoOnkyo
        ModelTX-RZ820TX-SR373
        TypeA/V ReceiverA/V Receiver
        CountryAustraliaNorth America
        Release Year20172017
        PredecessorOnkyo TX-RZ810 Onkyo TX-SR353
        SuccessorOnkyo TX-RZ830 Onkyo TX-SR383
        AMPLIFIER Onkyo TX-RZ820 Onkyo TX-SR373
        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
        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 Onkyo TX-SR373
        Digital Signal Processing (DSP) Engine32-bit Digital Signal Processing Engines
        DACAKM AK4458
        DAC Specs384 kHz/32 Bit192 kHz/24 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
        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 TrueHDWMA, MP3, AAC
        High Resolution Music Playback via USB and/or Network up to 192 kHz
        High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD
        Gapless Playback
        DSD via HDMI 2-ch/Multi-ch Input 2-ch
        DSD via USB 2-ch Input
        DSD to PCM Converter
        USB DAC
        Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
        DTS Dialogue Control
        Dialog Enhancement
        Dialog normalization
        Dialogue Lift
        Tone Control Front L/R Channels Front L/R Channels
        Compressed Music Enhancer Advanced Music Optimizer (bluetooth included) 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)
        CALIBRATION Onkyo TX-RZ820 Onkyo TX-SR373
        Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ AccuEQ
        VIDEO FEATURES Onkyo TX-RZ820 Onkyo TX-SR373
        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)
        Video Signal Upscaling
        Analog To HDMI Upconversion Component**, Composite
        Component Video Upscaling
        Analog to Analog Video conversion
        Component Video Maximum Resolution480i/576i
        isf Certified Calibration Control
        CONNECTIVITY Onkyo TX-RZ820 Onkyo TX-SR373
        Wi-Fi
        Bluetooth SBC, AAC SBC, AAC
        Works with Amazon Alexa
        Chromecast Built-In
        Works with SonoS
        DTS Play-Fi
        MHL Input
        DLNA 1.5
        AirPlay AirPlay
        Apple Product Connection iPod, iPhone and iPad
        Remote AppOnkyo Remote App for iPod touch/iPhone and Android-Powered Devices
        InstaPrevue Input Source Prevue
        TERMINALS Onkyo TX-RZ820 Onkyo TX-SR373
        HDMI Inputs7 (1 front)4
        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
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs7.20.2
        XLR Pre-outs
        Composite Video Inputs22
        Composite Video Outputs1
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs
        Ethernet
        Ethernet Switch
        PC In
        Front A/V InputsHDMIUSB
        Speaker A/B
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        uport
        ZONES Onkyo TX-RZ820 Onkyo TX-SR373
        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)0
        Remote (IR) Input/Output1 / 00 / 0
        MISCELLANEOUS Onkyo TX-RZ820 Onkyo TX-SR373
        On-Screen Display Graphical User Interface with Overlaid On-Screen Display (OSD) via HDMI via HDMI
        ONKYO-RI System Control
        RIHD (Remote Interactive Over HDMI)
        Pre-Pro/Learning Remote / /
        On Screen Remote Programming
        Bi-directional Remote Setup via GUI
        Smart Grid-Ready
        RADIO Onkyo TX-RZ820 Onkyo TX-SR373
        Analog Tuner FM/AM with RDS FM/AM
        Presets4030
        Digital Radio
        Internet Radio TuneIn
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Onkyo TX-RZ820 Onkyo TX-SR373
        Solid Aluminum Front
        Speaker Terminals115
        Large Speaker Terminals112
        Color-Coded Speaker Terminals
        Transparent High-Grade Speaker Terminals
        Gold plated RCA terminals
        POWER Onkyo TX-RZ820 Onkyo TX-SR373
        Power SupplyAC 220-240 V, 50/60 HzAC 120 V, 60 Hz
        Independent Power Supply
        H.C.P.S. (High Current Power Supply) EI Transformer
        Toroidal Transformer
        Power Consumption710 W210 W
        No Sound Power70 W
        Standby Power0.15 W0.35 W
        Capacitor Bank15,000 µF
        ECO Mode / Hybrid Standby Function
        PHYSICAL Onkyo TX-RZ820 Onkyo TX-SR373
        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 168 mm x 326.5 mm
        17-1/8" x 6-5/8" x 12-13/16"
        Weight14 kg (30.9 lbs)8.0 kg (17 lb 10 oz)
        SPECIFICATIONS Onkyo TX-RZ820 Onkyo TX-SR373
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)
        Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)215 W (10% THD)155 W (10% THD)
        Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)180 W (1% THD)140 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)0.06% (20 Hz - 20 kHz, 1 Channel Driven, 50 W)
        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 kΩ
        Rated Preout Level and Impedance1 V/320 Ω
        Rated Headphone Jack Output Level and Impedance330 Ω
        Rated Headphone Power Output85 mW (32 Ω, 1 kHz, 10% THD)
        Phono Overload70 mV (MM, 1 kHz 0.5% Direct)
        S/N Ratio (Line, IHF-A)106 dB106 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)5 Hz - 100 kHz/0 dB, -3 dB (Direct)
        DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
        DSD Sampling Rates via USB2.8 MHz, 5.6 MHz, 11.2 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-TX
        Wi-Fi StandardIEEE 802.11 a/b/g/n
        Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
        Bluetooth Version4․1 + LE3.0
        Bluetooth Frequency2.4 GHz2.4 GHz
        HDMI TerminalType A (19-pin)
        HDMI Output Type5 V, 55 mA
        USB TerminalVer. 2.0, 5 V, 1 A5 V, 0.5 A
        FM Frequency87.5 MHz - 108.0 MHz87.5 MHz - 107.9 MHz
        AM Frequency522/530 kHz - 1611/1710 kHz530 kHz - 1700 kHz
        Warranty3 Years2 Years

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

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