Pioneer SC-LX704 vs Pioneer VSX-831

      Pioneer SC-LX704

      Pioneer VSX-831
      92
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      78
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      North America
      Europe Asia
      North America
      Australia
      Asia
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      Highlights

      • 9.2 Channels
      • 11.2 Channel Processing
      • 135 W (8 Ω, 1 kHz, 2 channel driven)
      • Dolby Atmos, DTS:X
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough, 4K/30Hz Upscaling
      • 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 Pioneer SC-LX704
      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 Pioneer SC-LX704 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 Pioneer SC-LX704 has 9 channel and the Pioneer VSX-831 has 5 channel amplifiers.


      Pioneer SC-LX704 Pioneer VSX-831

      Pioneer SC-LX704 was introduced in 2019. It is equipped with 9 channel amplifier with 135 W (8 Ω, 1 kHz, 2 channel driven) power per channel and is capable of 11.2 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K 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 Pioneer SC-LX704 and Pioneer VSX-831 and gave them scores of 92 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.

      Pioneer SC-LX704

      Pioneer VSX-831

      Amplifier
      91
      Amplifier
      77
      Audio Features
      91
      Audio Features
      71
      Video Features
      95
      Video Features
      92
      Connectivity
      91
      Connectivity
      80
      Zones
      92
      Zones
      55
      Radio
      92
      Radio
      88
      OVERALL
      92
      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 Pioneer SC-LX704 and Pioneer VSX-831.

      PROS

      Pioneer SC-LX704

      Pioneer VSX-831

      •   High Power Output - 135 W
      •   11.2 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   IMAX Enhanced
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   4 HDMI Outputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   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

      Pioneer SC-LX704

      Pioneer VSX-831

      •   No Front Wide Channel Support
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   0 8K Input
      •   No Digital Radio
      •   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

      Pioneer SC-LX704

      Pioneer VSX-831

      •   9.2 Channels
      •   Bluetooth 4․2
      •   6 HDMI Inputs
      •   Bluetooth 4․1 + LE

      3. Advantage of Pioneer SC-LX704

      This section shows those features and specifications which are the reason to choose Pioneer SC-LX704 over Pioneer VSX-831.

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      Pioneer SC-LX704
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      Pioneer SC-LX704 vs Pioneer VSX-831
      More Channels 9.2 vs 5.2
      Higher Power Output 135 W (8 Ω, 1 kHz, 2 channel driven) vs 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Certified 4 Ω Performance vs
      More Channel Processing 11.2 vs 5.1
      Dolby Atmos vs
      Dolby Atmos Height Virtualization vs
      Dolby Surround Upmixer vs
      DTS:X vs
      DTS Neural:X vs
      DTS-ES Discrete 6.1, Matrix 6.1 vs
      IMAX Enhanced vs
      High Resolution Audio Formats via USB Apple Lossless, WAV, FLAC, AIFF, AAC, DSD vs Apple Lossless, WAV, FLAC, AIFF, DSD
      Jitter Reduction PQLS & PQFA vs
      Dialog Enhancement vs
      Dialogue Lift vs
      Independent Subwoofer Outputs vs
      More Advanced Auto Speaker Calibration System MCACC Pro vs MCACC
      Higher MCACC Memory 3 vs 1
      Auto Phase Control Plus vs
      Full Band Phase Control vs
      Standing Wave Control Multi-Point (9 points) vs
      Polarity Check vs
      HLG vs
      Newer HDCP Version 2.3 vs 2.2
      Works with Amazon Alexa vs
      Works with SONOS vs
      DTS Play-Fi vs
      AirPlay AirPlay 2 vs AirPlay
      More HDMI Inputs 7 (1 front) vs 6
      More HDMI Outputs 3 (1 MAIN, 1 SUB, 1 ZONE 2) vs 1
      USB Input 2 (1 Front) vs 1 Front
      More Optical Inputs 3 vs 1
      More Coaxial Inputs/Outputs 2 vs 1
      More RCA Line Inputs 6 vs 3 (1 front)
      More RCA Pre-Outs 11.2 vs 0.2
      More Component Video Inputs 2 vs
      Front A/V Inputs HDMI, USB vs USB, Mini-Jack
      Speaker A/B vs
      Detachable Power Cord vs
      More Zones 3 vs 1
      RS-232C Interface vs
      +12V Trigger Output 2 (A: 100 mA, B: 25 mA) vs
      Remote (IR) Input/Output 2 / 1 vs 0 / 0
      IP Control for CI vs
      PreAmp Mode vs
      Tidal vs
      Deezer vs
      Solid Aluminum Front vs
      Advanced Direct Construction Advanced Direct Construction vs []
      More Speaker Terminals 11 vs 5
      More Large Speaker Terminals 11 vs 5
      Transformer Stabilizer vs
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 250 W (10% THD) vs 160 W (10% THD)
      Higher S/N Ratio (Line, IHF-A) 107 dB vs 106 dB
      Higher S/N Ratio (Phono MM, IHF-A) 90 dB vs 80 dB
      Higher DSD Sampling Rate via USB 11.2 MHz, 5.6 MHz, 2.8 MHz vs 5.6 MHz, 2.8 MHz
      Newer Bluetooth Version 4․2 vs 4․1 + LE
      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 Pioneer SC-LX704.

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      Pioneer VSX-831
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      Pioneer SC-LX704 vs Pioneer VSX-831
      Dolby Pro Logic vs PLII
      DTS Neo vs Neo:6
      Analog Tuner FM/AM vs FM/AM with RDS
      Bigger Power Supply 310 W vs 390 W
      Higher Rated Headphone Power Output 57 mW (32 Ω, 1 kHz, 10% THD) vs 85 mW (32 Ω, 1 kHz, 10% THD)
      Wider AM Frequency Range 530 kHz - 1710 kHz vs 522/530 kHz - 1611/1710 kHz

      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 Pioneer SC-LX704 Pioneer VSX-831
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. MCACC Pro MCACC
        HDR10
        Dolby Vision
        New HDCP Version2.32.2
        Analog To HDMI Upconversion Component**, Composite Composite
        Wi-Fi
        Bluetooth SBC, AAC
        Chromecast Built-In
        USB Input2 (1 Front)1 Front
        Phono Input
        Composite Video Inputs22
        Ethernet
        Analog Tuner FM/AM FM/AM with RDS
        Pandora
        Spotify
      WEAKNESSES Pioneer SC-LX704 Pioneer VSX-831
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No eARC
        No 8K Passthroughup to 4K/60p (YCbCr 4:4:4)up to 4K/60p (4:4:4 24-bit)
      4K/60p (4:2:0 36-bit)
      4K/24p (4:4:4 36-bit)
        Few 8K Inputs
        No Digital Radio

      6. Amplifier

      Pioneer SC-LX704 Pioneer VSX-831

      9 channel Class D3 Amplifier: Pioneer SC-LX704 features 9 channel power amplifier with Class D3 design. It is rated at 135 W (8 Ω, 1 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).


        AMPLIFIER Pioneer SC-LX704 Pioneer VSX-831
        Channels9.25.2
        Power Output135 W (8 Ω, 1 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Amplifier DesignClass D3 (Direct Energy HD)Discrete Direct Energy
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability

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        Pioneer SC-LX704
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        7. Speaker Configurations

        Pioneer SC-LX704'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:
        • Pioneer SC-LX704: 5.2.2, 5.2.4, 7.2.2 with internal amplifier and 7.2.4 with addition of external 2 channel amplifier.
        • Pioneer VSX-831: Not supported.
        • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
        • Pioneer SC-LX704: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2, 5.2.4, 7.2.2 with internal amplifier and 7.2.4 with addition of external 2 channel amplifier.
        • Pioneer VSX-831: Not supported.
        • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
        • Pioneer SC-LX704: 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

        Pioneer SC-LX704 supports Dolby Atmos.

        • Dolby Surround Upmixer: Pioneer SC-LX704 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.
        • Dolby Atmos Height Virtualization: Pioneer SC-LX704 supports Dolby Atmos Height Virtualization which is a digital signal processing solution that leverages Dolby's deep understanding of human audio perception to create the sensation of overhead sound from the listener-level speakers.

        DTS:X

        Pioneer SC-LX704 supports DTS:X.

        • DTS Neural:X: Pioneer SC-LX704 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: Pioneer SC-LX704 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.

        IMAX Enhanced

        Pioneer SC-LX704 is IMAX Enhanced certified. To qualify for IMAX Enhanced certification, 4K HDR televisions, projectors, sound bars, a/v receivers, loudspeakers, powered subwoofers and other premium home entertainment devices must meet carefully prescribed performance requirements established by IMAX, DTS and Hollywood's leading experts.

        • What makes an IMAX Enhanced A/V receiver different from an A/V receiver with DTS:X technology? DTS:X technology is commonly found in most multi-channel A/V receivers on the market today. All IMAX Enhanced A/V receivers include DTS:X technology and deliver additional features, such as auto-sensing of IMAX Enhanced content, via IMAX Mode. IMAX Mode indicates that your A/V receiver supports fully immersive IMAX signature sound.
        AUDIO DECODING Pioneer SC-LX704 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
        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 Discrete 6.1, Matrix 6.1
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer

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        Pioneer VSX-831
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        9. HDMI

        Pioneer SC-LX704 comes with 7 HDMI inputs. It has 3 outputs - 1 MAIN and 1 SUB and 1 ZONE 2.

        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 (YCbCr 4:4:4) video signal.
        • 4K Upscaling: Both receivers can upscale 1080p 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 Copy Protection: Pioneer SC-LX704 is HDCP 2.3 and Pioneer VSX-831 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.

        HDR (High Dynamic Range)

        Pioneer SC-LX704 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 Pioneer SC-LX704 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 Version2.32.2
        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 (YCbCr 4:4:4)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 1080p to 4K up to 4K

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        Pioneer SC-LX704
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        10. Inputs and Outputs

        Audio

        • Phono Input: There is an MM phono input on Pioneer SC-LX704 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: Pioneer SC-LX704 has 11.2 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. Also, Pioneer SC-LX704 has 11 channel processing but has only 9 channel amplifier, so it needs external amplifier connected to the analog pre-outs in order to reach its maximum speaker configuration.
        • Analog Line Inputs: There are 6 pair of line inputs on Pioneer SC-LX704 and 3 pair of line inputs on Pioneer VSX-831 for connecting sources with analog outputs.
        • Digital Inputs: 3 optical inputs and 2 coaxial inputs are available on Pioneer SC-LX704 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:
        • Pioneer SC-LX704
          Inputs:           7 (1 front)   Outputs: 3 (1 MAIN, 1 SUB, 1 ZONE 2)
          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.
        • Pioneer SC-LX704
          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.
        • Pioneer SC-LX704 supports up to 480i/576i resolution on Component video connectors. resolution on Component video connectors.
        • Pioneer SC-LX704
          Inputs:           2   Outputs: 0.
        • Pioneer VSX-831
          Inputs:           0   Outputs: 0.

        Front A/V Inputs

        • Pioneer SC-LX704: HDMI, USB
        • Pioneer VSX-831: USB, Mini-Jack

        Pioneer SC-LX704

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        Pioneer VSX-831

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        TERMINALS Pioneer SC-LX704 Pioneer VSX-831
        HDMI Inputs7 (1 front)6
        HDMI Outputs3 (1 MAIN, 1 SUB, 1 ZONE 2)1
        8K Inputs
        USB Input2 (1 Front)1 Front
        USB DC Out Port
        Optical Inputs31
        Optical Outputs
        Coaxial Inputs21
        RCA Line Inputs63 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs11.20.2
        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 Pioneer SC-LX704 and Pioneer VSX-831 and gave them scores of 92 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.


        Pioneer SC-LX704

        Pioneer VSX-831

        OVERALL
        92
        OVERALL
        78

        Amplifier

        EXCELLENT
        91
        •   9.2 Channels
        •   High Power Output - 135 W
        GOOD
        77
        •   Few Channels - 5.2
        •   Low Power Output - 80 W

        Audio Features

        EXCELLENT
        91
        •   9.2 Channels
        •   No Front Wide Channel Support
        •   11.2 Channel Processing
        •   Dolby Atmos
        •   Dolby Atmos Height Virtualization
        •   DTS:X
        •   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
        95
        •   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
        91
        •   No eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Works with Amazon Alexa
        •   Google Assistant
        •   Chromecast Built-In
        •   7 HDMI Inputs
        •   4 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   Many RCA Line Inputs
        •   Phono Input
        •   RCA Pre-Outs
        •   Composite Video Inputs
        •   Component Video Inputs
        •   Ethernet
        •   Bluetooth 4․2
        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
        92
        •   3 Zones
        AVERAGE
        55
        •   No Zones

        Radio

        EXCELLENT
        92
        •   Analog Tuner
        •   Pandora
        •   Spotify
        •   Tidal
        EXCELLENT
        88
        •   Analog Tuner
        •   Pandora
        •   Spotify
        •   No Tidal

        12. Specifications

        GENERAL Pioneer SC-LX704 Pioneer VSX-831
        BrandPioneerPioneer
        SeriesElite
        ModelSC-LX704VSX-831
        TypeA/V ReceiverA/V Receiver
        CountryNorth AmericaAustralia
        Release Year20192017
        PredecessorPioneer SC-LX701 Pioneer VSX-830-K
        SuccessorPioneer VSX-832
        AMPLIFIER Pioneer SC-LX704 Pioneer VSX-831
        Channels9.25.2
        Power Output135 W (8 Ω, 1 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Front Wide Channel Support
        Amplifier DesignClass D3 (Direct Energy HD)Discrete Direct Energy
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability
        AUDIO FEATURES Pioneer SC-LX704 Pioneer VSX-831
        Digital Signal Processing (DSP) EngineDigital Quad-Core 32-bit DSP (Cirrus Logic) + Aureus™ Floating-Point DSP (TI)Cirrus Logic (Quad Core) x 1
        DACESS ES9026PRO x 2AKM AK4458
        DAC Specs384 kHz/32 Bit384 kHz/32 Bit
        Maximum Channel Processing11.25.1
        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
        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 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
        Network Audio FormatsMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
        Music Playback via USBMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSDMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
        High Resolution Music Playback via USB and/or Network 64, 88.2, 96, 176.4, 192 kHz/24 bit 64, 88.2, 96, 176.4, 192 kHz/24 bit
        High Resolution Audio Formats via USBApple Lossless, WAV, FLAC, AIFF, AAC, DSDApple 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 PQLS & PQFA
        Auto Level Control
        Dialog Enhancement
        Dialog normalization
        Dialogue Lift
        Sound Retriever Advanced Advanced (2-Channel)
        Sound Retriever AIR
        Digital noise Reduction
        Tone Control All Channels All Channels
        Compressed Music Enhancer Advanced Sound Retriever Advanced Sound Retriever
        High-resolution Music Enhancer
        Audyssey Dynamic EQ
        Audyssey Dynamic Volume
        Audyssey LFC
        Audyssey Sub EQ HT
        Audyssey DSX
        Direct Mode
        Pure Direct Mode
        Auto Surround
        Optimum Surround
        Advanced Surround10 + 112
        Wide Surround
        Front Stage Surround Advance
        Headphone Surround
        Virtual Speakers
        Virtual Depth
        Independent Subwoofer Outputs
        CALIBRATION Pioneer SC-LX704 Pioneer VSX-831
        Auto Speaker Calibration System with Mic. MCACC Pro MCACC
        Manual MCACC
        MCACC Memory31
        Reflex Optimizer
        Phase Control
        Auto Phase Control Plus
        Full Band Phase Control
        Standing Wave Control Multi-Point (9 points)
        EQ Bands9-Band9-Band
        Symmetric EQ
        X-Curve
        Distance Adjustment0.05 feet0.1 feet
        Precision Distance
        Polarity Check
        Auto Subwoofer Crossover
        VIDEO FEATURES Pioneer SC-LX704 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 Version2.32.2
        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 (YCbCr 4:4:4)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 1080p to 4K 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 Pioneer SC-LX704 Pioneer VSX-831
        Wi-Fi
        Bluetooth SBC, AAC
        Works with Amazon Alexa
        Google Assistant
        Chromecast Built-In
        Apple Siri
        Works with SonoS
        DTS Play-Fi
        MHL Input
        DLNA 1.5
        AirPlay AirPlay 2 AirPlay
        Apple Product Connection Made for iPhone, iPod and iPad (Airplay only) iPod, iPhone and iPad (Airplay only)
        Remote App iControlAV5 (for iOS and Android)
        InstaPrevue Input Source Prevue
        TERMINALS Pioneer SC-LX704 Pioneer VSX-831
        HDMI Inputs7 (1 front)6
        HDMI Outputs3 (1 MAIN, 1 SUB, 1 ZONE 2)1
        8K Inputs
        USB Input2 (1 Front)1 Front
        USB DC Out Port
        Optical Inputs31
        Optical Outputs
        Coaxial Inputs21
        RCA Line Inputs63 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs11.20.2
        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 InputsHDMI, USBUSB, Mini-Jack
        Speaker A/B
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        adapterport
        ZONES Pioneer SC-LX704 Pioneer VSX-831
        Number of Zones31
        Powered Zones2 and 3
        Zone 2 OutsHDMI, RCA Pre/Line Out
        Zone 3 OutsRCA Pre/Line Out
        RS-232C Interface
        +12V Trigger Output2 (A: 100 mA, B: 25 mA)
        Remote (IR) Input/Output2 / 10 / 0
        MISCELLANEOUS Pioneer SC-LX704 Pioneer VSX-831
        On-Screen DisplayIcon-based Graphical User Interface (GUI)
        GUI Languages7
        AV Navigator
        IP Control
        PreAmp Mode
        Versatile Speaker Configuration
        FL Dimmer
        Function Rename
        RADIO Pioneer SC-LX704 Pioneer VSX-831
        Analog Tuner FM/AM FM/AM with RDS
        Presets4040
        Digital Radio
        Internet Radio TuneIn TuneIn
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Pioneer SC-LX704 Pioneer VSX-831
        Front PanelBrushed
        Solid Aluminum Front
        ConstructionAdvanced Direct Construction
        Speaker Terminals115
        Large Speaker Terminals115
        Color-Coded Speaker Terminals
        Transparent High-Grade Speaker Terminals
        3D Space Frame Construction
        Gold plated RCA terminals
        POWER Pioneer SC-LX704 Pioneer VSX-831
        Power SupplyAC 120 V, 60 HzAC 220-240 V, 50/60 Hz
        Low Leakage Flux Power Transformer
        Transformer Stabilizer
        Power Consumption310 W390 W
        No Sound Power45 W
        Standby Power0.1 W0.15 W
        Auto Power off
        PHYSICAL Pioneer SC-LX704 Pioneer VSX-831
        Dimensions (W x H x D)435 mm x 185 mm x 440 mm
        17-1/8" x 7-5/16" x 17-5/16"        		435 mm x 173 mm x 370.5 mm
        17-1/8" x 6-13/16" x 14-9/16"
        Weight15.5 kg (34.2 lbs)9.2 kg (20.3 lbs)
        SPECIFICATIONS Pioneer SC-LX704 Pioneer VSX-831
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)
        Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)135 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)250 W (10% THD)160 W (10% THD)
        Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)130 W (1% THD)
        Multi Channel Simultaneous Drive760 W (8 Ω, 1 kHz, 1.0%)
        Dynamic Power per Channel (3 Ω, Front)160 W
        Dynamic Power per Channel (4 Ω, Front)125 W
        Dynamic Power per Channel (8 Ω, Front)85 W
        THD0.04% (1 kHz, 100 W)
        Input Sensitivity and Impedance (Line)200 mV/82 kΩ200 mV/47 kΩ
        Input Sensitivity and Impedance (Phono MM)3.5 mV/47 kΩ3.5 mV/47 kΩ
        Rated Preout Level and Impedance1 V/470 kΩ
        Rated Headphone Jack Output Level and Impedance330 Ω
        Rated Headphone Power Output57 mW (32 Ω, 1 kHz, 10% THD)85 mW (32 Ω, 1 kHz, 10% THD)
        Phono Overload70 mV (MM, 1 kHz, 0.5%)70 mV (MM, 1 kHz, 0.5%)
        S/N Ratio (Line, IHF-A)107 dB106 dB
        S/N Ratio (Phono MM, IHF-A)90 dB80 dB
        Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Pure Direct)
        DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
        DSD Sampling Rates via USB11.2 MHz, 5.6 MHz, 2.8 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/PR)
        1 Vp-p/75 Ω (Composite)        		1 Vp-p/75 Ω (Composite)
        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 Version4․24․1 + LE
        Bluetooth Frequency2.4 GHz2.4 GHz
        HDMI TerminalType A (19-pin)
        HDMI Output Type5 V, 55 mA
        USB TerminalVer. 2.0, 5 V, 500 mAUSB2.0 (Type A) 5 V, 1 A
        FM Frequency87.5 MHz - 107.9 MHz87.5 MHz - 108.0 MHz
        FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)Mono: 1.0 µV (11.2 dBf)
        AM Frequency530 kHz - 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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