Pioneer VSX-1123-K vs Pioneer VSX-523-K

      Pioneer VSX-1123-K

      Pioneer VSX-523-K
      75
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      63
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      USA
      USA
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      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • 4K/30Hz Passthrough, 4K/30Hz Upscaling
      • Bluetooth, Ethernet

      Highlights

      • 5.1 Channels
      • 5.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • 4K/30Hz Passthrough

      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 VSX-1123-K
      4. Common Strengths and Weaknesses
      5. Amplifier
      6. Speaker Configurations
      7. Immersive Audio Formats
      8. HDMI
      9. Inputs and Outputs
      10. Evaluations
      11. Specifications

      1. Overview

      Here we are comparing Pioneer VSX-1123-K to Pioneer VSX-523-K 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 VSX-1123-K has 7 channel and the Pioneer VSX-523-K has 5 channel amplifiers with Pioneer VSX-1123-K's being more powerful.


      Pioneer VSX-1123-K Pioneer VSX-523-K

      Pioneer VSX-1123-K was introduced in 2013. It is equipped with 7 channel amplifier with 90 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 7.1 maximum channel processing. It , passes 4K/30Hz and upscales up to 4K/30p video signal.

      Pioneer VSX-523-K was introduced in 2013. 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/30Hz video signal.

      We evaluated Pioneer VSX-1123-K and Pioneer VSX-523-K and gave them scores of 75 and 63 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 VSX-1123-K

      Pioneer VSX-523-K

      Amplifier
      75
      Amplifier
      71
      Audio Features
      75
      Audio Features
      62
      Video Features
      66
      Video Features
      59
      Connectivity
      78
      Connectivity
      61
      Zones
      85
      Zones
      55
      Radio
      85
      Radio
      59
      OVERALL
      75
      OVERALL
      63

      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 VSX-1123-K and Pioneer VSX-523-K.

      PROS

      Pioneer VSX-1123-K

      Pioneer VSX-523-K

      •   Front Wide Channel Support
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Bluetooth
      •   8 HDMI Inputs
      •   USB Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   USB Input
      •   Composite Video Inputs
      •   Analog Tuner

      CONS

      Pioneer VSX-1123-K

      Pioneer VSX-523-K

      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No Phono Input
      •   No Digital Radio
      •   No Tidal
      •   Few Channels - 5.1
      •   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 HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Wi-Fi
      •   No Bluetooth
      •   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


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

      AVERAGE

      Pioneer VSX-1123-K

      Pioneer VSX-523-K

      •   7.2 Channels
      •   Power Output - 90 W
      •   7.1 Channel Processing
      •   Wi-Fi
      •   3 HDMI Outputs
      •   RCA Line Inputs

      3. Advantage of Pioneer VSX-1123-K

      This section shows those features and specifications which are the reason to choose Pioneer VSX-1123-K over Pioneer VSX-523-K.

      Check the Price

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      Pioneer VSX-1123-K vs Pioneer VSX-523-K
      More Channels 7.2 vs 5.1
      Higher Power Output 90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Bi-amp capability Front vs
      More Channel Processing 7.1 vs 5.1
      Dolby Pro Logic PLIIz vs PLII
      Dolby Digital EX vs
      Surround EX vs
      DTS Neo Neo:X vs Neo:6
      DTS-HD High Resolution Audio vs
      DTS-ES Discrete 6.1, Matrix 6.1 vs
      Music Playback via USB MP3, WMA, AAC, Apple Lossless, 192kHz / 24-Bit WAV, FLAC, AIFF, DSD vs MP3, WMA, AAC
      Higher Resolution Music Playback via USB 88.2, 96, 176.4, 192 kHz/24 bit vs 88.2, 96, 176.4, 192 kHz/24 bit
      High Resolution Audio Formats via USB Apple Lossless, WAV, FLAC, AIFF, DSD vs
      Gapless Playback vs
      DSD via HDMI 2-ch/Multi-ch Input vs 2-ch Input
      Jitter Reduction plus PQLS (HDMI Bitstream/ Multi) vs
      Auto Level Control Multi-Channel vs 2 Channel
      Dialog Enhancement vs
      Dialogue Lift via Dialog Enhancement vs
      Sound Retriever Advanced (Multi-Channel / Auto with ARC) vs Advanced (2-Channel)
      Sound Retriever AIR vs
      Digital Noise Reduction vs
      High-resolution Music Enhancer Hi-bit24 Audio Processing vs
      Wide Surround vs
      Virtual Speakers Surround Back / Height / Depth / Wide vs
      Virtual Depth vs
      Manual MCACC vs
      Higher MCACC Memory 6 vs 1
      Auto Phase Control Plus vs
      Standing Wave Control vs
      More EQ Bands 9-Band vs 5-Band
      X-Curve vs
      Distance Adjustment 1/2 inch vs 0.1 Feet
      Polarity Check vs
      Auto Subwoofer Crossover vs
      PC Display vs
      Video Signal Upscaling up to 4K/30p vs
      Analog To HDMI Upconversion Component****, Composite vs
      Pure Cinema vs
      Video Parameter Adjustments YNR, CNR, BNR, MNR, Detail, Brightness, Contrast, Hue, Chroma, Black Level vs
      Triple HD Noise Reduction vs
      Wi-Fi via optional AS-WL300 adapter (sold separately) vs
      Bluetooth via optional AS-BT100 or AS-BT200 adapters (sold separately) vs
      MHL Input 1 Front (Version 2.0) vs
      Remote Controll App iControlAV2013 (for iOS and Android) vs
      More HDMI Inputs 8 (1 front) vs 4
      More HDMI Outputs 2 (1 for MAIN, 1 for MAIN/HDZONE) vs 1
      USB DC Out Port 1 Rear for AS-WL300 (5 V, 0.6 A) vs
      More RCA Line Inputs 4 vs 3
      More RCA Pre-Outs 2.2 vs 0.1
      More Composite Video Inputs 4 (1 front) vs 2
      More Component Video Inputs 1 vs
      Ethernet vs
      Front A/V Inputs HDMI, USB, Composite Video vs USB
      Speaker A/B vs
      adapterport vs
      More Zones 3 vs 1
      Remote (IR) Input/Output 1 / 1 vs 0 / 0
      On-Screen Display Graphical User Interface (GUI) with Album Artwork (HDMI only) vs Composite Video Only
      AVNavigator Built-in vs
      Versatile Speaker Configuration Surround Back/ Front Height/ Front Wide/ Front Bi-Amp/ Zone 2/ B-Speaker vs
      Function Rename vs
      More Presets 63 vs 30
      Internet Radio vTuner vs
      Pandora vs
      Spotify vs
      More Speaker Terminals 9 vs 5
      More Large Speaker Terminals 9 vs 2
      Bigger Power Supply 550 W vs 415 W
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 90 W (0.08% THD) vs 80 W (0.08% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) 165 W (1% THD) vs 140 W (1% THD)
      Higher S/N Ratio (Line, IHF-A) 100 dB vs 98 dB
      Higher S/N Ratio (Line, EIA, at 1 W (1 kHz)) 81 dB vs 79 dB

      4. 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 VSX-1123-K Pioneer VSX-523-K
        DSD via HDMI 2-ch/Multi-ch Input 2-ch Input
        Auto Speaker Calibration System with Mic. Advanced MCACC MCACC Auto
        New HDCP Version2.22.2
        USB Input1 Front1 Front
        Composite Video Inputs4 (1 front)2
        Analog Tuner FM/AM FM/AM
      WEAKNESSES Pioneer VSX-1123-K Pioneer VSX-523-K
        No Dolby Atmos
        No Dolby Atmos Height Virtualization
        No DTS:X
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10
        No HDR10+
        No Dolby Vision
        No eARC
        No 8K Passthroughup to 4K/30pup to 4K/30p
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No Phono Input
        No Digital Radio
        No Tidal

      5. Amplifier

      Pioneer VSX-1123-K Pioneer VSX-523-K

      7 channel Discrete Direct Energy Amplifier: Pioneer VSX-1123-K features 7 channel power amplifier with Discrete Direct Energy design. It is rated at 90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

      5 channel Discrete Direct Energy Amplifier: Pioneer VSX-523-K 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 VSX-1123-K Pioneer VSX-523-K
        Channels7.25.1
        Power Output90 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Amplifier DesignDiscrete Direct EnergyDiscrete Direct Energy
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability Front

        Check the Price

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        6. Speaker Configurations

        Pioneer VSX-1123-K's and Pioneer VSX-523-K's amplifiers can be assigned for different speaker configurations.

        • Configurations: Available configurations are:
        • Pioneer VSX-1123-K: 5.2, 7.2 with internal amplifier.
        • Pioneer VSX-523-K: 5.1 with internal amplifier.
        • Front Wide Channel support: With the presence of two front wide speakers you can enhance the front surround stage. The following speaker configurations are available for front wide channels:
        • Pioneer VSX-1123-K: 7.2.
        • Pioneer VSX-523-K: Does not support.
        • Bi-Amp: Pioneer VSX-1123-K 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.

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        Pioneer VSX-523-K
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        7. HDMI

        Pioneer VSX-1123-K comes with 8 HDMI inputs. It has 2 outputs - 1 for MAIN and 1 for MAIN/HDZONE.

        Pioneer VSX-523-K comes with 4 HDMI inputs. It has 1 output.

        • 4K/30Hz Passthrough: On both receivers all inputs pass up to 4K/30p video signal.
        • 4K Upscaling on Pioneer VSX-1123-K: It can upscale up to 4K/30p from HDMI and analog sources.
        • Analog To HDMI Upconversion: Pioneer VSX-1123-K 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.
        • 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.


        VIDEO FEATURES Pioneer VSX-1123-K Pioneer VSX-523-K
        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/30pup to 4K/30p
        Video Signal Upscaling up to 4K/30p

        Check the Price

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        8. Inputs and Outputs

        Audio

        • Analog Pre-Outs: Pioneer VSX-1123-K has 2.2 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 4 pair of line inputs on Pioneer VSX-1123-K and 3 pair of line inputs on Pioneer VSX-523-K for connecting sources with analog outputs.
        • Digital Inputs: 1 optical input and 1 coaxial input are available for digital audio connections on both receivers.
        • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

        Video

        • HDMI:
        • Pioneer VSX-1123-K
          Inputs:           8 (1 front)   Outputs: 2 (1 for MAIN, 1 for MAIN/HDZONE)
          8K Inputs: 0.
        • Pioneer VSX-523-K
          Inputs:           4   Outputs: 1
          8K Inputs: 0.
        • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
        • Pioneer VSX-1123-K
          Inputs:           4   Outputs: 1.
        • Pioneer VSX-523-K
          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.
        • Pioneer VSX-1123-K supports up to 1080p (1125p) resolution on Component video connectors. resolution on Component video connectors.
        • Pioneer VSX-1123-K
          Inputs:           1   Outputs: 0.
        • Pioneer VSX-523-K
          Inputs:           0   Outputs: 0.

        Front A/V Inputs

        • Pioneer VSX-1123-K: HDMI, USB, Composite Video
        • Pioneer VSX-523-K: USB

        Pioneer VSX-1123-K

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        Pioneer VSX-523-K

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        TERMINALS Pioneer VSX-1123-K Pioneer VSX-523-K
        HDMI Inputs8 (1 front)4
        HDMI Outputs2 (1 for MAIN, 1 for MAIN/HDZONE)1
        8K Inputs
        USB Input1 Front1 Front
        USB DC Out Port1 Rear for AS-WL300 (5 V, 0.6 A)
        Optical Inputs11
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs43
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs2.20.1
        XLR Pre-outs
        Composite Video Inputs4 (1 front)2
        Composite Video Outputs11
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs1
        Component Video Outputs

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        9. Evaluations

        We evaluated Pioneer VSX-1123-K and Pioneer VSX-523-K and gave them scores of 75 and 63 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 VSX-1123-K

        Pioneer VSX-523-K

        OVERALL
        75
        OVERALL
        63

        Amplifier

        GOOD
        75
        •   7.2 Channels
        •   Power Output - 90 W
        GOOD
        71
        •   Few Channels - 5.1
        •   Low Power Output - 80 W

        Audio Features

        GOOD
        75
        •   7.2 Channels
        •   Front Wide Channel Support
        •   7.1 Channel Processing
        •   No Dolby Atmos
        •   No Dolby Atmos Height Virtualization
        •   No DTS:X
        •   No IMAX Enhanced
        •   No Auro 3D with Auro-Matic Upmixer
        •   DSD via HDMI
        AVERAGE
        62
        •   Few Channels - 5.1
        •   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

        AVERAGE
        66
        •   No HDR10
        •   No HDR10+
        •   No Dolby Vision
        •   No 8K Passthrough
        •   Analog To HDMI Upconversion
        AVERAGE
        59
        •   No HDR10
        •   No HDR10+
        •   No Dolby Vision
        •   No 8K Passthrough

        Connectivity

        GOOD
        78
        •   No eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Does not Work with Amazon Alexa
        •   8 HDMI Inputs
        •   3 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   RCA Line Inputs
        •   No Phono Input
        •   RCA Pre-Outs
        •   Composite Video Inputs
        •   Component Video Inputs
        •   Ethernet
        AVERAGE
        61
        •   No eARC
        •   New HDCP Version
        •   No Wi-Fi
        •   No 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

        Zones

        EXCELLENT
        85
        •   3 Zones
        AVERAGE
        55
        •   No Zones

        Radio

        EXCELLENT
        85
        •   Analog Tuner
        •   Pandora
        •   Spotify
        •   No Tidal
        AVERAGE
        59
        •   Analog Tuner
        •   No Pandora
        •   No Spotify
        •   No Tidal

        10. Specifications

        GENERAL Pioneer VSX-1123-K Pioneer VSX-523-K
        BrandPioneerPioneer
        ModelVSX-1123-KVSX-523-K
        TypeA/V ReceiverA/V Receiver
        CountryUSAUSA
        Release Year20132013
        PredecessorPioneer VSX-1122-K Pioneer VSX-522-K
        SuccessorPioneer VSX-1124-K Pioneer VSX-524-K
        AMPLIFIER Pioneer VSX-1123-K Pioneer VSX-523-K
        Channels7.25.1
        Power Output90 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 EnergyDiscrete Direct Energy
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability Front
        AUDIO FEATURES Pioneer VSX-1123-K Pioneer VSX-523-K
        Digital Signal Processing (DSP) EngineTexas Instruments AureusTexas Instruments Aureus
        DAC Specs192 kHz/24 Bit192 kHz/24 Bit
        Maximum Channel Processing7.15.1
        Air Studios Monitor Certification
        Dolby Atmos
        Dolby Atmos Height Virtualization
        Dolby Atmos Music
        Dolby TrueHD with Loudness Management
        Dolby Digital Plus
        Dolby Surround Upmixer
        Dolby Pro Logic PLIIz PLII
        Dolby Digital EX
        Surround EX
        DTS:X
        DTS Neural:X
        DTS Virtual:X
        DTS Neo Neo:X Neo:6
        DTS-HD Master Audio
        DTS-HD High Resolution Audio
        DTS 96/24
        DTS Express
        DTS-ES Discrete 6.1, Matrix 6.1
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer
        PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Music Playback via USBMP3, WMA, AAC, Apple Lossless, 192kHz / 24-Bit WAV, FLAC, AIFF, DSDMP3, WMA, AAC
        High Resolution Music Playback via USB and/or Network 88.2, 96, 176.4, 192 kHz/24 bit 88.2, 96, 176.4, 192 kHz/24 bit
        High Resolution Audio Formats via USBApple Lossless, WAV, FLAC, AIFF, DSD
        Gapless Playback
        DSD via HDMI 2-ch/Multi-ch Input 2-ch Input
        DSD via USB 2-ch Input
        DSD to PCM Converter
        USB DAC
        Jitter Reduction plus PQLS (HDMI Bitstream/ Multi)
        Auto Level ControlMulti-Channel2 Channel
        Dialog Enhancement
        Dialogue Lift via Dialog Enhancement
        Sound Retriever Advanced (Multi-Channel / Auto with ARC) Advanced (2-Channel)
        Sound Retriever AIR
        Digital noise Reduction
        Tone Control Front L/R Channels Front L/R Channels
        Compressed Music Enhancer Advanced Sound Retriever Advanced Sound Retriever
        High-resolution Music Enhancer Hi-bit24 Audio Processing
        Audyssey Dynamic EQ
        Audyssey Dynamic Volume
        Audyssey LFC
        Audyssey Sub EQ HT
        Audyssey DSX
        Direct Mode
        Pure Direct Mode
        Auto Surround
        Optimum Surround
        Advanced Surround15+1 Mode DSP9+1 Mode DSP
        Wide Surround
        Front Stage Surround Advance
        Headphone Surround
        Virtual SpeakersSurround Back / Height / Depth / Wide
        Virtual Depth
        Independent Subwoofer Outputs
        CALIBRATION Pioneer VSX-1123-K Pioneer VSX-523-K
        Auto Speaker Calibration System with Mic. Advanced MCACC MCACC Auto
        Manual MCACC
        MCACC Memory61
        Phase Control
        Auto Phase Control Plus
        Full Band Phase Control
        Standing Wave Control
        EQ Bands9-Band5-Band
        Symmetric EQ
        X-Curve
        Distance Adjustment1/2 inch0.1 Feet
        Precision Distance
        Polarity Check
        Auto Subwoofer Crossover
        PC Display
        VIDEO FEATURES Pioneer VSX-1123-K Pioneer VSX-523-K
        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/30pup to 4K/30p
        Video Signal Upscaling up to 4K/30p
        Analog To HDMI Upconversion Component****, Composite
        Component Video Upscaling
        Analog to Analog Video conversion
        Component Video Maximum Resolution1080p (1125p)
        Stream Smoother
        Pure Cinema
        Video Parameter AdjustmentsYNR, CNR, BNR, MNR, Detail, Brightness, Contrast, Hue, Chroma, Black Level
        Triple HD noise Reduction
        Super Resolution
        isf Certified Calibration Control
        CONNECTIVITY Pioneer VSX-1123-K Pioneer VSX-523-K
        Wi-Fi via optional AS-WL300 adapter (sold separately)
        Bluetooth via optional AS-BT100 or AS-BT200 adapters (sold separately)
        Works with Amazon Alexa
        Chromecast Built-In
        Works with SonoS
        DTS Play-Fi
        MHL Input 1 Front (Version 2.0)
        DLNA 1.5
        AirPlay AirPlay AirPlay
        Apple Product Connection iPod, iPhone and iPad via front USB iPod and iPhone via front USB
        Remote App iControlAV2013 (for iOS and Android)
        InstaPrevue Input Source Prevue
        TERMINALS Pioneer VSX-1123-K Pioneer VSX-523-K
        HDMI Inputs8 (1 front)4
        HDMI Outputs2 (1 for MAIN, 1 for MAIN/HDZONE)1
        8K Inputs
        USB Input1 Front1 Front
        USB DC Out Port1 Rear for AS-WL300 (5 V, 0.6 A)
        Optical Inputs11
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs43
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs2.20.1
        XLR Pre-outs
        Composite Video Inputs4 (1 front)2
        Composite Video Outputs11
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs1
        Component Video Outputs
        Ethernet
        Ethernet Switch
        PC In
        Front A/V InputsHDMI, USB, Composite VideoUSB
        Speaker A/B
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        adapterport
        ZONES Pioneer VSX-1123-K Pioneer VSX-523-K
        Number of Zones31
        Powered Zones 2
        Zone 2 OutsComposite Video, RCA Pre/Line Out
        Zone 3 OutsHDMI
        RS-232C Interface
        +12V Trigger Output
        Remote (IR) Input/Output1 / 10 / 0
        MISCELLANEOUS Pioneer VSX-1123-K Pioneer VSX-523-K
        On-Screen DisplayGraphical User Interface (GUI) with Album Artwork (HDMI only)Composite Video Only
        Multi-Zone On-Screen Display
        AV Navigator Built-in
        IP Control
        PreAmp Mode
        Versatile Speaker ConfigurationSurround Back/ Front Height/ Front Wide/ Front Bi-Amp/ Zone 2/ B-Speaker
        FL Dimmer
        Function Rename
        Remote ControllerLearning Remote ControlSystem Remote Control
        RADIO Pioneer VSX-1123-K Pioneer VSX-523-K
        Analog Tuner FM/AM FM/AM
        Presets6330
        Digital Radio
        Internet Radio vTuner
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Pioneer VSX-1123-K Pioneer VSX-523-K
        Front PanelBrushedBrushed
        Solid Aluminum Front
        Speaker Terminals95
        Large Speaker Terminals92
        Color-Coded Speaker Terminals
        3D Space Frame Construction
        Gold plated RCA terminals
        POWER Pioneer VSX-1123-K Pioneer VSX-523-K
        Power SupplyAC 120 V, 60 HzAC 120 V, 60 Hz
        Low Leakage Flux Power Transformer
        Transformer Stabilizer
        Power Consumption550 W415 W
        Standby Power0.1 W0.1 W
        ECO Mode / Hybrid Standby Function
        Auto Power Standby
        PHYSICAL Pioneer VSX-1123-K Pioneer VSX-523-K
        Dimensions (W x H x D)435 mm x 168 mm x 363 mm
        17-3/16" x 6-5/8" x 14-5/16"        		435 mm x 168 mm x 331.5 mm
        17-1/8" x 6-5/8" x 13-1/16"
        Weight9.8 kg (21 lb 10 oz)8.3 kg (18 lb 5 oz)
        SPECIFICATIONS Pioneer VSX-1123-K Pioneer VSX-523-K
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)90 W (0.08% THD)80 W (0.08% THD)
        Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)165 W (1% THD)140 W (1% THD)
        Input Sensitivity and Impedance (Line)315 mV/47 kΩ (Line)200 mV/47 kΩ (Line)
        S/N Ratio (Line, IHF-A)100 dB98 dB
        S/N Ratio (Line, EIA, at 1 W (1 kHz))81 dB79 dB
        DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
        DSD Sampling Rates via USB2.8 MHz
        Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
        0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
        1 Vp-p/75 Ω (Composite)        		1 Vp-p/75 Ω (Composite)
        Ethernet Standard10BASE-T/100BASE-TX
        HDMI Terminal19-pin (not DVI)Type A (19-pin)
        HDMI Output Type5 V, 100 mA5 V, 100 mA
        HDMI Input/MHL Terminal5 V, 900 mA
        USB TerminalUSB2.0 (Type A) 5 V, 2.1 AUSB2.0 (Type A) 5 V, 1 A
        FM Frequency87.5 MHz - 108 MHz87.5 MHz - 108 MHz
        AM Frequency530 kHz - 1700 kHz530 kHz - 1700 kHz
        Warranty1 Year Parts & Labor1 Year

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

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