Denon AVR-X1800H vs Onkyo TX-SR309

      Denon AVR-X1800H

      Onkyo TX-SR309
      89
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      60
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      UK
      USA
      Taiwan
      Europe and Australia Others
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      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • HDMI 2.1
      • Dolby Atmos, DTS:X
      • HDR10, HDR10+, Dolby Vision
      • 8K Passthrough, 8K Upscaling
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      Highlights

      • 5.1 Channels
      • 5.1 Channel Processing
      • 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)

      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 Denon AVR-X1800H
      4. Advantage of Onkyo TX-SR309
      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 Denon AVR-X1800H to Onkyo TX-SR309 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 Denon AVR-X1800H has 7 channel and the Onkyo TX-SR309 has 5 channel amplifiers with Denon AVR-X1800H's being more powerful.


      Denon AVR-X1800H Onkyo TX-SR309

      Denon AVR-X1800H was introduced in 2024. It is equipped with 7 channel amplifier with 80 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 8K/60Hz and 4K/120Hz and upscales up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 video signal.

      Onkyo TX-SR309 was introduced in 2011. It is equipped with 5 channel amplifier with 65 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 1080/60p video signal.

      We evaluated Denon AVR-X1800H and Onkyo TX-SR309 and gave them scores of 89 and 60 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.

      Denon AVR-X1800H

      Onkyo TX-SR309

      Amplifier
      86
      Amplifier
      71
      Audio Features
      87
      Audio Features
      64
      Video Features
      100
      Video Features
      46
      Connectivity
      86
      Connectivity
      61
      Zones
      77
      Zones
      55
      Radio
      96
      Radio
      59
      OVERALL
      89
      OVERALL
      60

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

      2. Pros and Cons

      In this section we present pros and cons of Denon AVR-X1800H and Onkyo TX-SR309.

      PROS

      Denon AVR-X1800H

      Onkyo TX-SR309

      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   HDR10+
      •   Dolby Vision
      •   HDMI 2.1
      •   eARC
      •   New HDCP Version
      •   Auto Low Latency Mode Pass-through
      •   VRR
      •   QFT
      •   8K Passthrough
      •   8K Upscaling
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   HEOS
      •   3 8K Inputs
      •   USB Input
      •   Phono Input
      •   RCA Pre-Outs
      •   Ethernet
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal
      •   Bluetooth 5․0
      •   DSD via HDMI
      •   USB Input
      •   Many RCA Line Inputs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Analog Tuner

      CONS

      Denon AVR-X1800H

      Onkyo TX-SR309

      •   Low Power Output - 80 W
      •   No Front Wide Channel Support
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   1 HDMI Outputs
      •   Few RCA Line Inputs
      •   No Composite Video Inputs
      •   No Digital Radio
      •   Few Channels - 5.1
      •   Low Power Output - 65 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 Auto Speaker Calibration System with Mic.
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Wi-Fi
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   3 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   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

      Denon AVR-X1800H

      Onkyo TX-SR309

      •   7.2 Channels
      •   7.1 Channel Processing
      •   6 HDMI Inputs
      •   2 Zones

      3. Advantage of Denon AVR-X1800H

      This section shows those features and specifications which are the reason to choose Denon AVR-X1800H over Onkyo TX-SR309.

      Check the Price

      Denon AVR-X1800H
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      Denon AVR-X1800H vs Onkyo TX-SR309
      More Channels 7.2 vs 5.1
      Higher Power Output 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Certified 4 Ω Performance vs
      Bi-amp capability assignable vs
      More Channel Processing 7.1 vs 5.1
      Dolby Atmos up to 5.1.2 vs
      Dolby Atmos Height Virtualization vs
      Dolby Atmos Music vs
      Dolby Surround Upmixer vs
      Dolby Digital EX vs
      DTS:X up to 5.1.2 vs
      DTS Neural:X vs
      DTS Virtual:X vs
      DTS-ES Discrete 6.1, Matrix 6.1 vs
      Music Playback via USB MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, DSD vs FLAC, WMA, MP3, AAC
      Higher Resolution Music Playback via USB up to 192 kHz vs
      High Resolution Audio Formats via USB Apple Lossless, WAV, FLAC, DSD vs
      Gapless Playback vs
      DSD via USB 2-ch Input vs
      DTS Dialog Control vs
      Dialog Enhancement vs
      Dialog Level Adjustment vs
      Dialog Normalization vs
      Audyssey Dynamic EQ vs
      Audyssey Dynamic Volume vs
      More Advanced Auto Speaker Calibration System Audyssey MultEQ XT vs
      HDR10 vs
      HDR10+ vs
      Dynamic HDR vs
      BT.2020 color space vs
      Dolby Vision vs
      HLG vs
      Enhanced Audio Return Channel (eARC) vs
      Auto Low Latency Mode Pass-through vs
      VRR vs
      QFT vs
      Video Signal Passthrough up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 vs up to 1080p
      Video Signal Upscaling up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 vs
      isf Certified Calibration Control vs
      Wi-Fi vs
      Bluetooth SBC vs
      Works with Amazon Alexa vs
      DLNA 1.5 vs
      AirPlay AirPlay 2 vs
      Remote Controll App vs
      More HDMI Inputs 6 vs 3
      More 8K Inputs 3 vs
      USB DC Out Port 5 V, 1.5 A vs
      Phono Input vs
      More RCA Pre-Outs 2.2 vs 0.1
      Ethernet vs
      More Zones 2 vs 1
      Remote (IR) Input/Output 1 / 0 vs
      Internet Radio TuneIn vs
      Pandora vs
      Spotify vs
      Tidal vs
      Deezer vs
      Napster vs
      SiriusXM vs
      More Large Speaker Terminals 7 vs 0
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 80 W (0.08% THD) vs 65 W (0.7% THD)
      Higher Power Output (6 Ω, 1 kHz, 2 channel driven, FTC) 120 W (0.7% THD) vs 90 W (0.9% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 175 W (10% THD) vs 120 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 145 W (1% THD) vs 100 W (1% THD)
      Wider AM Frequency Range 520 kHz - 1710 kHz vs 522/530 kHz - 1611/1710 kHz
      Longer Warranty 3 Years vs 2 Years
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      Denon AVR-X1700H
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      7.2 channel

      80 W

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      7.2 channel

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      Onkyo TX-NR5100
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      7.2 channel

      80 W

      4. Advantage of Onkyo TX-SR309

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR309 over Denon AVR-X1800H.

      Check the Price

      Onkyo TX-SR309
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      Denon AVR-X1800H vs Onkyo TX-SR309
      Dolby Pro Logic vs PLII
      DTS Neo vs Neo:6
      Jitter Reduction vs PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
      More RCA Line Inputs 2 vs 6 (1 front)
      More RCA Line Outputs vs 1
      More Composite Video Inputs vs 5 (1 front)
      More Composite Video Outputs vs 2
      More Component Video Inputs vs 2
      More Component Video Outputs vs 1
      Front A/V Inputs USB vs USB, Composite Video, RCA Audio
      Higher S/N Ratio (Line, IHF-A) 98 dB vs 100 dB

      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 Denon AVR-X1800H Onkyo TX-SR309
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        USB Input1 Front for USB memory1 Front
        Analog Tuner FM/AM FM/AM
      WEAKNESSES Denon AVR-X1800H Onkyo TX-SR309
        Low Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        Few HDMI Outputs11
        No Digital Radio

      6. Amplifier

      Denon AVR-X1800H Onkyo TX-SR309

      7 channel Amplifier: Denon AVR-X1800H features 7 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

      5 channel Amplifier: Onkyo TX-SR309 features 5 channel power amplifier. It is rated at 65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).


        AMPLIFIER Denon AVR-X1800H Onkyo TX-SR309
        Channels7.25.1
        Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Bi-amp Capability assignable

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        Denon AVR-X1800H
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        7. Speaker Configurations

        Denon AVR-X1800H's and Onkyo TX-SR309's amplifiers can be assigned for different speaker configurations.

        • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
        • Denon AVR-X1800H: 5.2.2 with internal amplifier.
        • Onkyo TX-SR309: Not supported.
        • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
        • Denon AVR-X1800H: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
        • Onkyo TX-SR309: Not supported.
        • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
        • Denon AVR-X1800H: 5.2, 7.2 with internal amplifier.
        • Onkyo TX-SR309: 5.1 with internal amplifier.
        • Bi-Amp: Denon AVR-X1800H 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

        Denon AVR-X1800H supports Dolby Atmos.

        • Dolby Surround Upmixer: Denon AVR-X1800H 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: Denon AVR-X1800H 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

        Denon AVR-X1800H supports DTS:X.

        • DTS Neural:X: Denon AVR-X1800H 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 Virtual:X: Denon AVR-X1800H supports DTS Virtual:X which bridges the gap between DTS:X codec and the reality of so many consumers' homes, allowing you to enjoy multi-dimensional sound regardless of room size, layout, or speaker configuration. If you have a limited speaker setup you will miss a full immersive potential of your entertainment system. DTS Virtual:X adds height and surround audio effect to your system without adding height speakers. It works with multiple configurations and delivers immersive sound experience out of 5.1 or even 2.1 speaker layouts.
        • DTS Dialog Control: Denon AVR-X1800H 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 Denon AVR-X1800H Onkyo TX-SR309
        Dolby Atmos up to 5.1.2
        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 up to 5.1.2
        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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        Onkyo TX-SR309
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        9. HDMI

        Denon AVR-X1800H comes with 3 HDMI 2.1 inputs with 8K support and 3 inputs with 4K support. It has 1 output.

        Onkyo TX-SR309 comes with 3 HDMI inputs. It has 1 output.

        • 8K/60Hz and 4K/120Hz Passthrough on Denon AVR-X1800H: 3 out of 6 inputs pass up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 and the rest of the inputs pass up to 4K 50/60Hz 4:4:4 video signal.
          1080/60p Passthrough on Onkyo TX-SR309: All inputs pass up to 1080p video signal.
        • 8K Upscaling on Denon AVR-X1800H: It can upscale up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 from HDMI sources.
        • 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 Denon AVR-X1800H only).
        • HDCP 2.3 Copy Protection: Denon AVR-X1800H is HDCP 2.3 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)

        Denon AVR-X1800H supports HDR10, HDR10+, Dolby Vision, Dynamic HDR and Hybrid Log-Gamma.

        Onkyo TX-SR309 does not support HDR. 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.


        Enhanced Audio Return Channel (eARC)

        Denon AVR-X1800H supports Audio Return Channel (ARC) which allows the compatible TV to send audio signal to the a/v receiver through the same HDMI cable which is used to send audio and video signals to the TV. So one HDMI cable is used to transfer audio signal in both directions. New Enhanced ARC will support uncompressed audio formats such as Dolby Atmos, DTS:X, Dolby TrueHD and DTS HD Master Audio whereas the previous ARC could support only Dolby Digital, Dolby Digital Plus, DTS, DTS HD, and PCM.


        Gaming Features

        Denon AVR-X1800H supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.



        VIDEO FEATURES Denon AVR-X1800H Onkyo TX-SR309
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        QMS (Quick Media Switching)
        ALLM (Auto Low Latency Mode)
        VRR (Variable Refresh Rate)
        QFT (Quick Frame transport)
        3-D Ready
        Video Signal Passthroughup to 8K 50/60Hz and 4K 100/120Hz 4:4:4up to 1080p
        Video Signal Upscaling up to 8K 50/60Hz and 4K 100/120Hz 4:4:4

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        Denon AVR-X1800H
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        10. Inputs and Outputs

        Audio

        • Phono Input: There is an MM phono input on Denon AVR-X1800H with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
        • Analog Pre-Outs: Denon AVR-X1800H 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 and Outputs: There are 2 pair of line inputs on Denon AVR-X1800H and 6 pair of line inputs on Onkyo TX-SR309 for connecting sources with analog outputs. There is also 1 pair of line outputs on Onkyo TX-SR309.
        • Digital Inputs: 2 optical inputs 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:
        • Denon AVR-X1800H
          Inputs:           6   Outputs: 1
          8K Inputs: 3.
        • Onkyo TX-SR309
          Inputs:           3   Outputs: 1
          8K Inputs: 0.
        • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
        • Denon AVR-X1800H
          Inputs:           0   Outputs: 0.
        • Onkyo TX-SR309
          Inputs:           5   Outputs: 2.
        • Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one. resolution on Component video connectors. resolution on Component video connectors.
        • Denon AVR-X1800H
          Inputs:           0   Outputs: 0.
        • Onkyo TX-SR309
          Inputs:           2   Outputs: 1.

        Front A/V Inputs

        • Denon AVR-X1800H: USB
        • Onkyo TX-SR309: USB, Composite Video, RCA Audio

        Denon AVR-X1800H

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        Onkyo TX-SR309

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        TERMINALS Denon AVR-X1800H Onkyo TX-SR309
        HDMI Inputs63
        HDMI Outputs11
        8K Inputs3
        USB Input1 Front for USB memory1 Front
        USB DC Out Port 5 V, 1.5 A
        Optical Inputs22
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs26 (1 front)
        RCA Line Outputs1
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs2.20.1
        XLR Pre-outs
        Composite Video Inputs5 (1 front)
        Composite Video Outputs2
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs1

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        Onkyo TX-SR309
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        11. Evaluations

        We evaluated Denon AVR-X1800H and Onkyo TX-SR309 and gave them scores of 89 and 60 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.


        Denon AVR-X1800H

        Onkyo TX-SR309

        OVERALL
        89
        OVERALL
        60

        Amplifier

        EXCELLENT
        86
        •   7.2 Channels
        •   Low Power Output - 80 W
        GOOD
        71
        •   Few Channels - 5.1
        •   Low Power Output - 65 W

        Audio Features

        EXCELLENT
        87
        •   7.2 Channels
        •   No Front Wide Channel Support
        •   7.1 Channel Processing
        •   Dolby Atmos
        •   Dolby Atmos Height Virtualization
        •   DTS:X
        •   No IMAX Enhanced
        •   No Auro 3D with Auro-Matic Upmixer
        •   DSD via HDMI
        AVERAGE
        64
        •   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

        EXCELLENT
        100
        •   HDR10
        •   HDR10+
        •   Dolby Vision
        •   HDMI 2.1
        •   Auto Low Latency Mode Pass-through
        •   VRR
        •   QFT
        •   8K Passthrough
        •   8K Upscaling
        POOR
        46
        •   No HDR10
        •   No HDR10+
        •   No Dolby Vision
        •   No 8K Passthrough

        Connectivity

        EXCELLENT
        86
        •   eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Works with Amazon Alexa
        •   Google Assistant
        •   HEOS
        •   6 HDMI Inputs
        •   1 HDMI Outputs
        •   3 8K Inputs
        •   USB Input
        •   Few RCA Line Inputs
        •   Phono Input
        •   RCA Pre-Outs
        •   No Composite Video Inputs
        •   Ethernet
        •   Bluetooth 5․0
        AVERAGE
        61
        •   No eARC
        •   No Wi-Fi
        •   No Bluetooth
        •   Does not Work with Amazon Alexa
        •   3 HDMI Inputs
        •   1 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   Many RCA Line Inputs
        •   No Phono Input
        •   No RCA Pre-Outs
        •   Composite Video Inputs
        •   Component Video Inputs
        •   No Ethernet

        Zones

        GOOD
        77
        •   2 Zones
        AVERAGE
        55
        •   No Zones

        Radio

        EXCELLENT
        96
        •   Analog Tuner
        •   Pandora
        •   Spotify
        •   Tidal
        AVERAGE
        59
        •   Analog Tuner
        •   No Pandora
        •   No Spotify
        •   No Tidal

        12. Specifications

        GENERAL Denon AVR-X1800H Onkyo TX-SR309
        BrandDenonOnkyo
        ModelAVR-X1800HTX-SR309
        TypeA/V ReceiverA/V Receiver
        CountryUSATaiwan
        Release Year20242011
        PredecessorDenon AVR-X1700H
        SuccessorOnkyo TX-SR313
        AMPLIFIER Denon AVR-X1800H Onkyo TX-SR309
        Channels7.25.1
        Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)65 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        Front Wide Channel Support
        Discrete Amplification
        WRAT (Wide Range Amplifier Technology)
        VLSC (Vector Linear Shaping Circuitry)
        Optimum Gain Volume Circuitry
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Discrete Output Stage Circuitry
        3-Stage Inverted Darlington Circuitry
        PUSH-PULL Design
        Mono Block Power Amplifier Construction
        Independent Block Construction (Amp/Preprocessor)
        Bi-amp Capability assignable
        BTL (Bridged Transless or Bridging)
        AUDIO FEATURES Denon AVR-X1800H Onkyo TX-SR309
        Digital Processing Crossover Network
        Digital Signal Processing (DSP) EngineAdvanced 32-Bit Processing DSP Chip
        DACBurr-Brown
        DAC Specs192 kHz/24 Bit
        Maximum Channel Processing7.15.1
        D.D.S.C. HD Digital
        Alpha Processing
        Air Studios Monitor Certification
        Dolby Atmos up to 5.1.2
        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 up to 5.1.2
        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, MPEG-4 AAC, Apple Lossless, WAV, FLAC, DSD
        Music Playback via USBMP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, DSDFLAC, WMA, MP3, AAC
        High Resolution Music Playback via USB and/or Network up to 192 kHz
        High Resolution Audio Formats via USBApple Lossless, WAV, FLAC, DSD
        Gapless Playback
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        DSD via USB 2-ch Input
        DSD to PCM Converter
        USB DAC
        Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
        DTS Dialogue Control
        Dialog Enhancement
        Dialog Level Adjustment
        Dialog normalization
        Dialogue Lift
        Tone Control Front L/R Channels
        Compressed Music Enhancer 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
        Pure Direct Mode
        Virtual Speakers T-D (Theater-Dimensional)
        Independent Subwoofer Outputs
        CALIBRATION Denon AVR-X1800H Onkyo TX-SR309
        Auto Speaker Calibration System with Mic. Audyssey MultEQ XT
        Audyssey App Support
        Optimized Bass Redirection
        Bass Sync
        VIDEO FEATURES Denon AVR-X1800H Onkyo TX-SR309
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDMI Version2.1
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        HDCP Version2.3
        QMS (Quick Media Switching)
        ALLM (Auto Low Latency Mode)
        VRR (Variable Refresh Rate)
        QFT (Quick Frame transport)
        3-D Ready
        Video Signal Passthroughup to 8K 50/60Hz and 4K 100/120Hz 4:4:4up to 1080p
        Video Signal Upscaling up to 8K 50/60Hz and 4K 100/120Hz 4:4:4
        Analog To HDMI Upconversion
        Component Video Upscaling
        Analog to Analog Video conversion
        isf Certified Calibration Control
        CONNECTIVITY Denon AVR-X1800H Onkyo TX-SR309
        Wi-Fi
        Bluetooth SBC
        Bluetooth Headphone Transmission
        Works with Amazon Alexa
        Google Assistant
        Chromecast Built-In
        Apple Siri
        Works with SonoS
        HEOS
        DTS Play-Fi
        MHL Input
        DLNA 1.5
        AirPlay AirPlay 2
        Apple Product Connection iPod, iPhone and iPad iPod and iPhone via USB or optional DS-A4 Dock (sold separately)
        Remote App
        InstaPrevue Input Source Prevue
        TERMINALS Denon AVR-X1800H Onkyo TX-SR309
        HDMI Inputs63
        HDMI Outputs11
        8K Inputs3
        USB Input1 Front for USB memory1 Front
        USB DC Out Port 5 V, 1.5 A
        Optical Inputs22
        Optical Outputs
        Coaxial Inputs11
        RCA Line Inputs26 (1 front)
        RCA Line Outputs1
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs2.20.1
        XLR Pre-outs
        Composite Video Inputs5 (1 front)
        Composite Video Outputs2
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs1
        Ethernet
        Ethernet Switch
        PC In
        Front A/V InputsUSBUSB, Composite Video, RCA Audio
        Speaker A/B assignable
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        uport
        ZONES Denon AVR-X1800H Onkyo TX-SR309
        Number of Zones21
        Powered Zones 2
        Zone 2 OutsPre Out
        Whole House Mode
        RS-232C Interface
        +12V Trigger Output
        Remote (IR) Input/Output1 / 0
        MISCELLANEOUS Denon AVR-X1800H Onkyo TX-SR309
        On-Screen Display Hybrid Graphic User Interface Basic Overlay
        GUI Languages3
        Web Control
        IP Control
        Control4 SDDP
        Display 1 lines FLD
        Remote ControllerRC-1257
        Pre-programmed / Learnable / LCD Display / /
        ONKYO-RI System Control
        RIHD (Remote Interactive Over HDMI)
        Pre-Pro/Learning Remote /
        On Screen Remote Programming
        Bi-directional Remote Setup via GUI
        Activity Based Remote
        Smart Grid-Ready
        Denon Link HD
        Setup Assistant
        Quick Select plus / Quick Select /
        RADIO Denon AVR-X1800H Onkyo TX-SR309
        Analog Tuner FM/AM FM/AM
        Presets40
        Digital Radio
        Internet Radio TuneIn
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Denon AVR-X1800H Onkyo TX-SR309
        Front Panelnot Metal
        Solid Aluminum Front
        Speaker Terminals77
        Large Speaker Terminals70
        Color-Coded Speaker Terminals
        Transparent High-Grade Speaker Terminals
        High Grade Audio Components
        Gold plated RCA terminals
        POWER Denon AVR-X1800H Onkyo TX-SR309
        Power SupplyAC 120 V, 60 HzAC 120 V, 60 Hz
        Independent Power Supply
        H.C.P.S. (High Current Power Supply) Massive High Power Transformer
        Toroidal Transformer
        Power Consumption430 W3.3 A
        No Sound PowerECO On/Off: 29 W/39 W40 W
        Standby Power0.1 W0.2 W
        ECO Mode / Hybrid Standby Function
        Auto Power off
        PHYSICAL Denon AVR-X1800H Onkyo TX-SR309
        Dimensions (W x H x D)434 mm x 151 mm x 339 mm (with antenna: 434 mm x 215 mm x 339 mm)
        17 1/8" x 6" x 13 3/8" (with antenna: 17 1/8" x 8 1/2" x 13 3/8")        		435 mm x 150 mm x 328 mm
        17-1/8" x 5-7/8" x 12-15/16"
        Dimensions of Package (W x H x D)523 mm x 232 mm x 435 mm
        20.6" x 9.1" x 17.1"
        Weight8.6 kg (19 lbs)7.5 kg (16.5 lbs)
        Weight of Package23.4 lbs
        SPECIFICATIONS Denon AVR-X1800H Onkyo TX-SR309
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)65 W (0.7% THD)
        Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)120 W (0.7% THD)90 W (0.9% THD)
        Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)175 W (10% THD)120 W
        Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)145 W (1% THD)100 W (1% THD)
        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
        THD0.08% (20 Hz - 20 kHz, Half power)
        Phono Distortion0.03% (1 kHz, 3 V)
        Damping Factor60 (Front, 1 kHz, 8 Ω)
        Input Sensitivity and Impedance (Line)200 mV/47 kΩ200 mV/47 kΩ (Line)
        Input Sensitivity and Impedance (Phono MM)2.5 mV
        Rated Lineout Level and Impedance200 mV/2.2 kΩ (REC OUT)
        Maximum Lineout Level and Impedance2 V/2.2 kΩ (REC OUT)
        S/N Ratio (Line, IHF-A)98 dB100 dB
        S/N Ratio (Phono MM, IHF-A)74 dB
        Phono RIAA Deviation±1 dB (20-20 kHz)
        Frequency Response (Analog In)+1/-3 dB (10 Hz to 100 kHz, Direct mode)20 Hz - 50 kHz/+1 dB, -3 dB (DSP bypass)
        DSD Sampling Rates via HDMI2.8 MHz
        DSD Sampling Rates via USB5.6 MHz, 2.8 MHz
        Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
        0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
        1 Vp-p/75 Ω (Composite)
        Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
        Ethernet Standard100BASE-TX
        Wi-Fi StandardIEEE 802.11 a/b/g/n/ac
        Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
        Bluetooth Version5․0
        Bluetooth Frequency2.4 GHz
        USB TerminalUSB2.0 5V, 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: 2.8 µV (20.2 dBf)
        FM Effective Sensitivity1.2 µV (12.8 dBf)
        FM S/N RatioMono/Stereo: 70 dB/67 dB
        FM Harmonic Distortion (IHF, 1 kHz)Mono/Stereo: 0.7%/1.0%
        AM Frequency520 kHz - 1710 kHz522/530 kHz - 1611/1710 kHz
        AM Effective Sensitivity18 µV
        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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