Onkyo TX-SR393 vs Onkyo TX-NR818

      Onkyo TX-SR393

      Onkyo TX-NR818
      78
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      80
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      North America Europe
      Australia and Asia
      USA
      Others
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      Highlights

      • 5.2 Channels
      • 5.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • Dolby Atmos, DTS:X
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough, 4K/30Hz Upscaling
      • Bluetooth

      Highlights

      • 7.2 Channels
      • 9.1 Channel Processing
      • 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™2 Plus Certified
      • 4K/30Hz Upscaling
      • Ethernet
      • Phono Input

      Disclosure: We earn money from the affiliate links to products associated with content in this article.

      Table of Contents
      1. Overview
      2. Pros and Cons
      3. Advantage of Onkyo TX-SR393
      4. Advantage of Onkyo TX-NR818
      5. Common Strengths and Weaknesses
      6. Amplifier
      7. Speaker Configurations
      8. Immersive Audio Formats
      9. HDMI
      10. Inputs and Outputs
      11. Evaluations
      12. Specifications

      1. Overview

      Here we are comparing Onkyo TX-SR393 to Onkyo TX-NR818 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. The Onkyo TX-SR393 has 5 channel and the Onkyo TX-NR818 has 7 channel amplifiers.


      Onkyo TX-SR393 Onkyo TX-NR818

      Onkyo TX-SR393 was introduced in 2019. It is equipped with 5 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.

      Onkyo TX-NR818 was introduced in 2012. It is equipped with 7 channel amplifier with 135 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 9.1 maximum channel processing. It , passes 1080/60p and upscales up to 4K/30p (Marvell Qdeo) video signal.

      We evaluated Onkyo TX-SR393 and Onkyo TX-NR818 and gave them scores of 78 and 80 out of 100 recpectively. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

      Onkyo TX-SR393

      Onkyo TX-NR818

      Amplifier
      80
      Amplifier
      92
      Audio Features
      83
      Audio Features
      79
      Video Features
      95
      Video Features
      58
      Connectivity
      57
      Connectivity
      84
      Zones
      64
      Zones
      89
      Radio
      66
      Radio
      90
      OVERALL
      78
      OVERALL
      80

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

      2. Pros and Cons

      In this section we present pros and cons of Onkyo TX-SR393 and Onkyo TX-NR818.

      PROS

      Onkyo TX-SR393

      Onkyo TX-NR818

      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Bluetooth
      •   Analog Tuner
      •   High Power Output - 135 W
      •   Front Wide Channel Support
      •   THX™ Certification
      •   9.1 Channel Processing
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   8 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   Spotify

      CONS

      Onkyo TX-SR393

      Onkyo TX-NR818

      •   Few Channels - 5.2
      •   Low Power Output - 80 W
      •   No Front Wide Channel Support
      •   5.1 Channel Processing
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   No Wi-Fi
      •   Does not Work with Amazon Alexa
      •   4 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   No USB Input
      •   Few RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Composite Video Inputs
      •   No Ethernet
      •   No Digital Radio
      •   No Pandora
      •   No Spotify
      •   No Tidal
      •   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 Bluetooth
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No Digital Radio
      •   No Tidal


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

      AVERAGE

      Onkyo TX-SR393

      Onkyo TX-NR818

      •   2 Zones
      •   Bluetooth 4․2
      •   7.2 Channels
      •   Wi-Fi
      •   2 HDMI Outputs

      3. Advantage of Onkyo TX-SR393

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR393 over Onkyo TX-NR818.

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      Onkyo TX-SR393
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      Onkyo TX-SR393 vs Onkyo TX-NR818
      Higher DAC Specs 384 kHz/32 Bit vs 192 kHz/24 Bit
      Dolby Atmos vs
      Dolby Atmos Height Virtualization vs
      Dolby Surround Upmixer vs
      DTS:X vs
      DTS Neural:X vs
      DTS Virtual:X vs
      DTS Dialog Control vs
      HDR10 vs
      BT.2020 color space vs
      Dolby Vision vs
      HLG vs
      Video Signal Passthrough up to 4K/60p (RGB/YCbCr4:4:4) vs up to 1080p
      Bluetooth SBC, AAC vs
      USB DC Out Port vs
      Analog Tuner FM/AM with RDS vs FM/AM

      4. Advantage of Onkyo TX-NR818

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR818 over Onkyo TX-SR393.

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      Onkyo TX-NR818
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      Onkyo TX-SR393 vs Onkyo TX-NR818
      More Channels 5.2 vs 7.2
      Higher Power Output 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support vs
      Optimum Gain Volume Circuitry vs Linear
      THX™ Certification vs Select™2 Plus
      Independent Block Construction (Amp/Preprocessor) vs
      Bi-amp capability vs
      More Channel Processing 5.1 vs 9.1
      Dolby Pro Logic vs PLIIz
      Dolby Digital EX vs
      DTS Neo vs Neo:X
      Music Playback via USB vs FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, Dolby TruHD, LPCM, AAC
      Higher Resolution Music Playback via USB vs up to 192 kHz
      DSD via HDMI 2-ch vs 2-ch/Multi-ch Input
      DSD via USB vs 2-ch Input
      Jitter Reduction vs PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology
      Dialogue Lift vs Screen Centered Dialog
      THX Processing Mode vs
      Audyssey Dynamic EQ vs
      Audyssey Dynamic Volume vs
      Audyssey DSX vs
      Pure Audio Mode vs
      Analog To HDMI Upconversion vs Component, Composite, PC
      isf Certified Calibration Control vs
      Wi-Fi vs via Front USB (optional UWF-1 sold separately)
      MHL Input vs Front HDMI
      Remote Controll App vs iPod touch/iPhone and Android-Powered Devices
      InstaPrevue Input Source Prevue vs
      More HDMI Inputs 4 vs 8 (1 front)
      More HDMI Outputs 1 vs 2 (simultaneous)
      USB Input vs 1 Front (for iPod/iPhone) and 1 Rear
      More Optical Inputs 1 vs 3 (1 front)
      More Coaxial Inputs/Outputs 1 vs 3
      More RCA Line Inputs 3 vs 7 (1 front)
      Phono Input vs
      More RCA Pre-Outs 0.2 vs 9.2
      More Composite Video Inputs vs 5 (1 front)
      More Composite Video Outputs vs 1
      More Component Video Inputs vs 2
      More Component Video Outputs vs 1
      Ethernet vs
      PC In vs
      Front A/V Inputs vs HDMI/MHL, USB, Composite Video, RCA Audio, Optical
      Detachable Power Cord vs
      More Zones 2 vs 3
      More Powered Zones vs 2 and 3
      Whole House Mode vs
      RS-232C Interface vs
      +12V Trigger Output 0 vs 2 (Zone2, Zone 3)
      Remote (IR) Input/Output 0 / 0 vs 1 / 1
      ONKYO-RI System Control vs
      RIHD (Remote Interactive Over HDMI) vs
      Internet Radio vs vTuner
      Pandora vs
      Spotify vs
      SiriusXM vs
      More Speaker Terminals 5 vs 11
      More Large Speaker Terminals 2 vs 11
      Color-Coded Speaker Terminals vs
      H.C.P.S. (High Current Power Supply) vs Massive High Power Transformer
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 155 W (10% THD) vs 230 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 135 W (1% THD) vs 180 W (1% THD)
      Higher S/N Ratio (Line, IHF-A) 109 db vs 110 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 Onkyo TX-SR393 Onkyo TX-NR818
        DSD via HDMI 2-ch 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. AccuEQ Audyssey MultEQ XT32
        New HDCP Version2.32.2
        Analog Tuner FM/AM with RDS FM/AM
      WEAKNESSES Onkyo TX-SR393 Onkyo TX-NR818
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No eARC
        No 8K Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 1080p
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No Digital Radio
        No Tidal

      6. Amplifier

      Onkyo TX-SR393 Onkyo TX-NR818

      5 channel Amplifier: Onkyo TX-SR393 features 5 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.

      7 channel Amplifier: Onkyo TX-NR818 features 7 channel power amplifier. It is rated at 135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.
      • WRAT (Wide Range Amp Technology): Onkyo TX-NR818 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.
      • 3-Stage Inverted Darlington Circuitry: Onkyo TX-NR818 features 3-Stage Inverted Darlington Circuitry. Standard amplifiers employ a negative feedback (NFB) design that counters distortion by feeding back the opposite phase of the output signal into the input stage. Unfortunately, NFB is easily affected by inverse electromotive forces from the speakers, leading to an increase in circuit noise. Three-Stage Inverted Darlington Circuitry is a core Onkyo technology incorporating a low-NFB design that makes the sound more natural. Sensitive to oscillations, this circuitry requires very advanced control technology in order to be incorporated into the amplifier.

      THX™ Select™2 Plus certification

      Onkyo TX-NR818 is THX™ Select™2 Plus certified. This means that it is ideally suited for a room where the screen-to-seat viewing distance is approximately 3 to 4 meters, and the room size is approximately 56 cubic meters.

      AMPLIFIER Onkyo TX-SR393 Onkyo TX-NR818
      Channels5.27.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry Linear
      THX™ Certification Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)

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      Onkyo TX-SR393
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      7. Speaker Configurations

      Onkyo TX-SR393's and Onkyo TX-NR818's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • Onkyo TX-SR393: 3.1.2 with internal amplifier.
      • Onkyo TX-NR818: Not supported.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • Onkyo TX-SR393: The speaker configurations for DTS:X are the same as for Dolby Atmos - 3.1.2 with internal amplifier.
      • Onkyo TX-NR818: Not supported.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Onkyo TX-SR393: 5.2 with internal amplifier.
      • Onkyo TX-NR818: 5.2, 7.2 with internal amplifier and 9.2 with addition of external 2 channel 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:
      • Onkyo TX-SR393: Does not support.
      • Onkyo TX-NR818: 9.2.
      • Bi-Amp: Onkyo TX-NR818 is able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

      8. Immersive Audio Formats

      Dolby Atmos

      Onkyo TX-SR393 supports Dolby Atmos.

      • Dolby Surround Upmixer: Onkyo TX-SR393 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: Onkyo TX-SR393 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

      Onkyo TX-SR393 supports DTS:X.

      • DTS Neural:X: Onkyo TX-SR393 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: Onkyo TX-SR393 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: Onkyo TX-SR393 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.

      Audyssey DSX

      Onkyo TX-NR818 supports Audyssey DSX which allows you to augment a standard five-channel home theater with either two Front Wide or two Front High speakers. The Wide channels create an expansive soundstage and bring out convincing directional effects. Alternatively, Height channels can add a vertical dimension to movie and game soundtracks.


      AUDIO DECODING Onkyo TX-SR393 Onkyo TX-NR818
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLIIz
      Dolby Digital EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:X
      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-NR818
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      9. HDMI

      Onkyo TX-SR393 comes with 4 HDMI inputs. It has 1 output.

      Onkyo TX-NR818 comes with 8 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

      • 4K/60Hz Passthrough on Onkyo TX-SR393: All inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
        1080/60p Passthrough on Onkyo TX-NR818: All inputs pass up to 1080p video signal.
      • 4K Upscaling: Both receivers can upscale 1080p to 4K from HDMI sources. Onkyo TX-NR818 can also upscale from analog sources.
      • Analog To HDMI Upconversion: Onkyo TX-NR818 supports analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
      • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on Onkyo TX-SR393 only).
      • HDCP 2.2 Copy Protection: Both receivers are HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      Onkyo TX-SR393 supports HDR10, Dolby Vision and Hybrid Log-Gamma.

      Onkyo TX-NR818 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.



      VIDEO FEATURES Onkyo TX-SR393 Onkyo TX-NR818
      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 (RGB/YCbCr4:4:4)up to 1080p
      Video Signal Upscaling 1080p to 4K up to 4K/30p (Marvell Qdeo)

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      Onkyo TX-SR393
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      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR818 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Pre-Outs: Onkyo TX-NR818 has 9.2 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, Onkyo TX-NR818 has 9 channel processing but has only 5 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 3 pair of line inputs on Onkyo TX-SR393 and 7 pair of line inputs on Onkyo TX-NR818 for connecting sources with analog outputs.
      • Digital Inputs: 1 optical input and 1 coaxial input are available on Onkyo TX-SR393 and 3 optical inputs and 3 coaxial inputs are available on Onkyo TX-NR818 for digital audio connections.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel of each receiver.

      Video

      • HDMI:
      • Onkyo TX-SR393
        Inputs:         4   Outputs: 1
        8K Inputs: 0.
      • Onkyo TX-NR818
        Inputs:         8 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-SR393
        Inputs:         0   Outputs: 0.
      • Onkyo TX-NR818
        Inputs:         5   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. resolution on Component video connectors.
      • Onkyo TX-NR818 supports up to 1080p resolution on Component video connectors.
      • Onkyo TX-SR393
        Inputs:         0   Outputs: 0.
      • Onkyo TX-NR818
        Inputs:         2   Outputs: 1.

      Front A/V Inputs

      • Onkyo TX-SR393: None
      • Onkyo TX-NR818: HDMI/MHL, USB, Composite Video, RCA Audio, Optical

      Onkyo TX-SR393

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      Onkyo TX-NR818

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      TERMINALS Onkyo TX-SR393 Onkyo TX-NR818
      HDMI Inputs48 (1 front)
      HDMI Outputs12 (simultaneous)
      8K Inputs
      USB Input1 Front (for iPod/iPhone) and 1 Rear
      USB DC Out Port
      Optical Inputs13 (1 front)
      Optical Outputs
      Coaxial Inputs13
      RCA Line Inputs37 (1 front)
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.29.2
      XLR Pre-outs
      Composite Video Inputs5 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs2
      Component Video Outputs1

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      Onkyo TX-NR818
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      11. Evaluations

      We evaluated Onkyo TX-SR393 and Onkyo TX-NR818 and gave them scores of 78 and 80 out of 100 recpectively. We also gave separate scores for 7 different categories according to the available features and specifications some of which are listed below. These evaluations are relative and may change each time a new receiver is added to the database.


      Onkyo TX-SR393

      Onkyo TX-NR818

      OVERALL
      78
      OVERALL
      80

      Amplifier

      GOOD
      80
      •   Few Channels - 5.2
      •   Low Power Output - 80 W
      EXCELLENT
      92
      •   7.2 Channels
      •   High Power Output - 135 W
      •   THX™ Certification

      Audio Features

      GOOD
      83
      •   Few Channels - 5.2
      •   No Front Wide Channel Support
      •   5.1 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI
      GOOD
      79
      •   7.2 Channels
      •   Front Wide Channel Support
      •   9.1 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
      AVERAGE
      58
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion

      Connectivity

      AVERAGE
      57
      •   No eARC
      •   New HDCP Version
      •   No Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   4 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   No USB Input
      •   Few RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Composite Video Inputs
      •   No Ethernet
      •   Bluetooth 4․2
      GOOD
      84
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   8 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet

      Zones

      AVERAGE
      64
      •   2 Zones
      EXCELLENT
      89
      •   3 Zones

      Radio

      AVERAGE
      66
      •   Analog Tuner
      •   No Pandora
      •   No Spotify
      •   No Tidal
      EXCELLENT
      90
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal

      12. Specifications

      GENERAL Onkyo TX-SR393 Onkyo TX-NR818
      BrandOnkyoOnkyo
      ModelTX-SR393TX-NR818
      TypeA/V ReceiverA/V Receiver
      CountryAustralia and AsiaUSA
      Release Year20192012
      PredecessorOnkyo TX-SR383 Onkyo TX-NR809
      SuccessorOnkyo TX-SR3100 Onkyo TX-NR828
      AMPLIFIER Onkyo TX-SR393 Onkyo TX-NR818
      Channels5.27.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)135 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Dynamic Audio Amplification
      Non-Phase Shift Amplifier
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry Linear
      THX™ Certification Select™2 Plus
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-SR393 Onkyo TX-NR818
      Digital Processing Crossover Network
      Digital Signal Processing (DSP) Engine32-bit Digital Signal Processing EnginesAdvanced 32-Bit Processing DSP Chip
      DACAKMBurr-Brown
      DAC Specs384 kHz/32 Bit192 kHz/24 Bit
      Maximum Channel Processing5.19.1
      Air Studios Monitor Certification
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLIIz
      Dolby Digital EX
      THX Listening Modes
      Surround EX also known as Dolby Digital Surround EX
      DTS:X
      DTS Neural:X
      DTS Virtual:X
      DTS Neo Neo:X
      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 USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, Dolby TruHD, LPCM, AAC
      High Resolution Music Playback via USB and/or Network up to 192 kHz
      High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, WMA Lossless, LPCM, AAC, Dolby TrueHD
      Gapless Playback
      DSD via HDMI 2-ch 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
      DTS Dialogue Control
      Dialog Enhancement
      Dialog Level Adjustment
      Dialog normalization
      Dialogue Lift Screen Centered Dialog
      Tone Control Front L/R Channels Front L/R Channels
      Compressed Music Enhancer Advanced Music Optimizer Advanced Music Optimizer
      High-resolution Music Enhancer
      THX Processing Mode
      Audyssey Dynamic EQ
      Audyssey Dynamic Volume
      Audyssey LFC
      Audyssey Sub EQ HT
      Audyssey DSX
      Phase-Matching Bass Boost
      Direct Mode
      Pure Audio Mode
      Pure Direct Analog Path Mode
      Virtual Speakers T-D (Theater-Dimensional) T-D (Theater-Dimensional)
      Independent Subwoofer Outputs
      CALIBRATION Onkyo TX-SR393 Onkyo TX-NR818
      Auto Speaker Calibration System with Mic. AccuEQ Audyssey MultEQ XT32
      Audyssey App Support
      VIDEO FEATURES Onkyo TX-SR393 Onkyo TX-NR818
      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 (RGB/YCbCr4:4:4)up to 1080p
      Video Signal Upscaling 1080p to 4K up to 4K/30p (Marvell Qdeo)
      Analog To HDMI Upconversion Component, Composite, PC
      Component Video Upscaling
      Analog to Analog Video conversion
      Component Video Maximum Resolution1080p
      isf Certified Calibration Control
      CONNECTIVITY Onkyo TX-SR393 Onkyo TX-NR818
      Wi-Fi via Front USB (optional UWF-1 sold separately)
      Bluetooth SBC, AAC
      Works with Amazon Alexa
      Chromecast Built-In
      Works with SonoS
      DTS Play-Fi
      MHL Input Front HDMI
      DLNA 1.5
      AirPlay
      Apple Product Connection iPod and iPhone via front USB
      Remote App iPod touch/iPhone and Android-Powered Devices
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-SR393 Onkyo TX-NR818
      HDMI Inputs48 (1 front)
      HDMI Outputs12 (simultaneous)
      8K Inputs
      USB Input1 Front (for iPod/iPhone) and 1 Rear
      USB DC Out Port
      Optical Inputs13 (1 front)
      Optical Outputs
      Coaxial Inputs13
      RCA Line Inputs37 (1 front)
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.29.2
      XLR Pre-outs
      Composite Video Inputs5 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs2
      Component Video Outputs1
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMI/MHL, USB, Composite Video, RCA Audio, Optical
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-SR393 Onkyo TX-NR818
      Number of Zones23
      Powered Zones 2 and 3
      Zone 2 OutsZone B Line OutRCA Line Out
      Zone 3 OutsRCA Line Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output02 (Zone2, Zone 3)
      Remote (IR) Input/Output0 / 01 / 1
      MISCELLANEOUS Onkyo TX-SR393 Onkyo TX-NR818
      On-Screen Display Advanced "Home" GUI
      GUI Languages9
      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
      RADIO Onkyo TX-SR393 Onkyo TX-NR818
      Analog Tuner FM/AM with RDS FM/AM
      Presets4040
      Digital Radio
      Internet Radio vTuner
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-SR393 Onkyo TX-NR818
      Solid Aluminum Front
      Speaker Terminals511
      Large Speaker Terminals211
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-SR393 Onkyo TX-NR818
      Power SupplyAC 220-240 V, 50/60 HzAC 120 V, 60 Hz
      Independent Power Supply
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer
      Toroidal Transformer
      Power Consumption465 W8.1 A
      No Sound Power95 W
      Standby Power0.2 W0.1 W
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-SR393 Onkyo TX-NR818
      Dimensions (W x H x D)435 mm x 160 mm x 328 mm
      17-1/8" x 6-5/16" x 12-15/16"      		435 mm x 198.5 mm x 435.5 mm
      17-1/8" x 7-13/16" x 18-1/8"
      Dimensions of Package (W x H x D)525 mm x 240 mm x 405 mm
      20-11/16" x 9-7/16" x 15-15/16"
      Weight8.2 kg (18.1 lbs)18.3 kg (40.3 lbs)
      Weight of Package10.5 kg (23.1 lbs)
      SPECIFICATIONS Onkyo TX-SR393 Onkyo TX-NR818
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)135 W (0.08% THD)
      Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)125 W (0.7% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)155 W (10% THD)230 W
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)135 W (1% THD)180 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)300 W
      Dynamic Power per Channel (4 Ω, Front)250 W
      Dynamic Power per Channel (8 Ω, Front)150 W
      THD0.08% (20 Hz - 20 kHz, Half power)0.08% (20 Hz - 20 kHz, Half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (1 kHz, 100 W/8 Ω)200 mV/47 kΩ (Line)
      Input Sensitivity and Impedance (Phono MM)2.5 mV/47 kΩ
      Rated Preout Level and Impedance200 mV/470 Ω
      Maximum Preout Level and Impedance4.6 V/470 Ω
      Rated Headphone Power Output80 mW (32 Ω, 1 kHz, 10% THD)
      Phono Overload70 mV (MM 1 kHz 0.5%)
      S/N Ratio (Line, IHF-A)109 db110 dB
      S/N Ratio (Phono MM, IHF-A)80 dB
      Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Direct)5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode)
      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)
      Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
      Ethernet Standard100BASE-TX
      Bluetooth Version4․2
      Bluetooth Frequency2.4 GHz
      USB Terminal5 V, 1 A
      FM Frequency87.5 MHz - 108.0 MHz87.5 MHz - 107.9 MHz
      FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)Mono: 1.0 µV (11.2 dBf)
      AM Frequency522/530 kHz - 1611/1710 kHz522/530 kHz - 1611/1710 kHz
      Warranty2 Years2 Years

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

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