Onkyo TX-SR494 vs Onkyo TX-NR797

      Onkyo TX-SR494

      Onkyo TX-NR797
      80
      Image cannot be found
      91
      Image cannot be found
      North America
      Europe
      Australia and Asia
      North America
      Asia
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Image cannot be found

      Highlights

      • 7.2 Channels
      • 7.1 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

      • 9.2 Channels
      • 9.1 Channel Processing
      • 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • THX™Select™ Certified
      • Dolby Atmos, DTS:X
      • HDR10, Dolby Vision
      • 4K/60Hz Passthrough, 4K/30Hz Upscaling
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

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

      Table of Contents
      1. Overview
      2. Pros and Cons
      3. Advantage of Onkyo TX-SR494
      4. Advantage of Onkyo TX-NR797
      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-SR494 to Onkyo TX-NR797 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-SR494 has 7 channel and the Onkyo TX-NR797 has 9 channel amplifiers.


      Onkyo TX-SR494 Onkyo TX-NR797

      Onkyo TX-SR494 was introduced in 2019. 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 4K/60Hz and upscales 1080p to 4K video signal.

      Onkyo TX-NR797 was introduced in 2019. It is equipped with 9 channel amplifier with 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) power per channel and is capable of 9.1 maximum channel processing. It supports Dolby Atmos and DTS:X, passes 4K/60Hz and upscales 1080p to 4K video signal.

      We evaluated Onkyo TX-SR494 and Onkyo TX-NR797 and gave them scores of 80 and 91 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-SR494

      Onkyo TX-NR797

      Amplifier
      81
      Amplifier
      91
      Audio Features
      85
      Audio Features
      91
      Video Features
      95
      Video Features
      95
      Connectivity
      60
      Connectivity
      85
      Zones
      78
      Zones
      90
      Radio
      66
      Radio
      92
      OVERALL
      80
      OVERALL
      91

      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-SR494 and Onkyo TX-NR797.

      PROS

      Onkyo TX-SR494

      Onkyo TX-NR797

      •   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
      •   THX™ Certification
      •   9.1 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   IMAX Enhanced
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   3 Zones
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal

      CONS

      Onkyo TX-SR494

      Onkyo TX-NR797

      •   Low Power Output - 80 W
      •   No Front Wide Channel Support
      •   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 Front Wide Channel Support
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No RCA Pre-Outs
      •   No Digital Radio


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

      AVERAGE

      Onkyo TX-SR494

      Onkyo TX-NR797

      •   7.2 Channels
      •   7.1 Channel Processing
      •   2 Zones
      •   Bluetooth 4․2
      •   9.2 Channels
      •   Power Output - 100 W
      •   3 HDMI Outputs
      •   Bluetooth 4․2

      3. Advantage of Onkyo TX-SR494

      This section shows those features and specifications which are the reason to choose Onkyo TX-SR494 over Onkyo TX-NR797.

      Check the Price

      Onkyo TX-SR494
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Onkyo TX-SR494 vs Onkyo TX-NR797
      USB DC Out Port vs
      More GUI Languages 9 vs 7
      Analog Tuner FM/AM with RDS vs FM/AM
      Higher S/N Ratio (Line, IHF-A) 109 db vs 106 dB
      Wider AM Frequency Range 522/530 kHz - 1611/1710 kHz vs 530 kHz - 1710 kHz

      4. Advantage of Onkyo TX-NR797

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR797 over Onkyo TX-SR494.

      Check the Price

      Onkyo TX-NR797
      Image cannot be found
      Image cannot be found
      Image cannot be found
      Onkyo TX-SR494 vs Onkyo TX-NR797
      More Channels 7.2 vs 9.2
      Higher Power Output 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Dynamic Audio Amplification vs
      Non-Phase Shift Amplifier vs
      VLSC (Vector Linear Shaping Circuitry) vs Front L/R channels
      THX™ Certification vs Select™ (previously known as Select2)
      More Channel Processing 7.1 vs 9.1
      THX Listening Modes vs
      IMAX Enhanced vs via future firmware update
      Music Playback via USB vs FLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD
      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 for S/PDIF Audio
      More Tone Control Channels Front L/R Channels vs All Channels
      THX Processing Mode vs
      Phase-Matching Bass Boost vs
      More Advanced Auto Speaker Calibration System AccuEQ vs AccuEQ Advance with AccuReflex™
      Analog To HDMI Upconversion vs Component**, Composite
      Wi-Fi vs
      Chromecast Built-In vs
      Works with SONOS vs
      DTS Play-Fi vs via Onkyo Music Control app
      AirPlay vs AirPlay 2 after firmware update
      Remote Controll App vs Onkyo Controller and Music Control apps
      More HDMI Inputs 4 vs 7 (1 front)
      More HDMI Outputs 1 vs 2 (1 Main, 1 Sub/Zone2)
      USB Input vs 1 (Rear)
      More RCA Line Inputs 3 vs 7 (1 Front)
      Phono Input vs
      More Composite Video Inputs vs 2
      More Component Video Inputs vs 1
      Ethernet vs
      Front A/V Inputs vs HDMI, Mini-Jack
      Detachable Power Cord vs
      More Zones 2 vs 3
      More Powered Zones 2 vs 2 and 3
      Zone 2 Outs Zone B Pre/Line Out vs HDMI, RCA Line Out (shared with Zone B)
      RS-232C Interface vs
      +12V Trigger Output 0 vs 1 (MAIN, 100 mA)
      Remote (IR) Input/Output 0 / 0 vs 1 / 0
      Internet Radio vs TuneIn
      Pandora vs
      Spotify vs
      Tidal vs
      Deezer vs
      More Speaker Terminals 7 vs 9
      More Large Speaker Terminals 2 vs 9
      H.C.P.S. (High Current Power Supply) vs Customized Transformer
      Bigger Power Supply 480 W vs 750 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 160 W (10% THD) vs 220 W (10% THD)
      Higher Rated Headphone Power Output 80 mW (32 Ω, 1 kHz, 10% THD) vs 85 mW (32 Ω, 1 kHz, 10% THD)

      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-SR494 Onkyo TX-NR797
        Dolby Atmos
        Dolby Atmos Height Virtualization
        DTS:X
        DSD via HDMI 2-ch 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. AccuEQ AccuEQ Advance with AccuReflex™
        HDR10
        Dolby Vision
        New HDCP Version2.32.3
        Bluetooth SBC, AAC SBC, AAC
        Analog Tuner FM/AM with RDS FM/AM
      WEAKNESSES Onkyo TX-SR494 Onkyo TX-NR797
        No Front Wide Channel Support
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No eARC
        No 8K Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (RGB/YCbCr4:4:4)
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No RCA Pre-Outs0.20.2
        No Digital Radio

      6. Amplifier

      Onkyo TX-SR494 Onkyo TX-NR797

      7 channel Amplifier: Onkyo TX-SR494 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.

      9 channel Linear Class A/B Amplifier: Onkyo TX-NR797 features 9 channel power amplifier with Linear Class A/B design. It is rated at 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.
      • Dynamic Audio Amplification: Onkyo TX-NR797 features Dynamic Audio Amplification which is Onkyo’s amplification philosophy that focuses on capturing the energy and dynamism contained in the audio signal and reproducing it without loss. Audio signals are not static like a test tone, but rather a countless collection of constantly moving waves. While static measurements such as S/N ratio and Total Harmonic Distortion are important, Onkyo believes that excellent dynamic and transient response is the key to emotionally involving sound. Dynamism - the “life” in music - is achieved when the amp can respond to changes in the signal instantaneously, so notes start and stop naturally and the nuances in attack, decay, sustain, and release are voiced with conviction. Onkyo home theater receivers represent the culmination of almost 70 years’ experience in amplifier design. The unique elements of their amplification system comprise high-current, low-impedance architecture to accurately control large speaker cones while enabling instantaneous response to dynamic changes, and discrete wide-range amplifier circuit topology to eliminate phase shift for clear and accurate audio imaging.
      • WRAT (Wide Range Amp Technology): Onkyo TX-NR797 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.

      THX™ Select™ (previously known as Select2) certification

      Onkyo TX-NR797 is THX™ Select™ (previously known as Select2) certified. This means that it is for medium sized rooms, up to 2,000 cubic feet in size, with a 10-12 foot viewing distance from the screen.

      AMPLIFIER Onkyo TX-SR494 Onkyo TX-NR797
      Channels7.29.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Dynamic Audio Amplification
      Non-Phase Shift Amplifier
      VLSC (Vector Linear Shaping Circuitry) Front L/R channels
      Optimum Gain Volume Circuitry
      THX™ Certification Select™ (previously known as Select2)
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)

      Check the Price

      Onkyo TX-SR494
      Image cannot be found
      Image cannot be found
      Image cannot be found

      7. Speaker Configurations

      Onkyo TX-SR494's and Onkyo TX-NR797's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • Onkyo TX-SR494: 5.2.2 with internal amplifier.
      • Onkyo TX-NR797: 5.2.2, 5.2.4, 7.2.2 with internal amplifier.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • Onkyo TX-SR494: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
      • Onkyo TX-NR797: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2, 5.2.4, 7.2.2 with internal amplifier.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Onkyo TX-SR494: 5.2, 7.2 with internal amplifier.
      • Onkyo TX-NR797: 5.2, 7.2 with internal amplifier.
      • 2-ch Bi-Amp: Both models are able to bi-amp up to 2 main channels simultaneously. During bi-amplification two amplifiers are used for one speaker. One amplifier powers the midrange and tweeter section of the speaker and another amplifier powers the low frequency woofers. Each amplifier is less loaded and performs better. In order to use this feature speakers must have 2 pairs of connectors.

      8. Immersive Audio Formats

      Dolby Atmos

      Onkyo TX-SR494 and Onkyo TX-NR797 support Dolby Atmos.

      • Dolby Surround Upmixer: Both models support 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: Both models support 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-SR494 and Onkyo TX-NR797 support DTS:X.

      • DTS Neural:X: Both models feature 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: Both models feature 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: Both models have DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.

      IMAX Enhanced

      Onkyo TX-NR797 is IMAX Enhanced certified. To qualify for IMAX Enhanced certification, 4K HDR televisions, projectors, sound bars, a/v receivers, loudspeakers, powered subwoofers and other premium home entertainment devices must meet carefully prescribed performance requirements established by IMAX, DTS and Hollywood's leading experts.

      • What makes an IMAX Enhanced A/V receiver different from an A/V receiver with DTS:X technology? DTS:X technology is commonly found in most multi-channel A/V receivers on the market today. All IMAX Enhanced A/V receivers include DTS:X technology and deliver additional features, such as auto-sensing of IMAX Enhanced content, via IMAX Mode. IMAX Mode indicates that your A/V receiver supports fully immersive IMAX signature sound.
      AUDIO DECODING Onkyo TX-SR494 Onkyo TX-NR797
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic
      Dolby Digital EX
      THX Listening Modes
      DTS:X
      DTS Neural:X
      DTS Virtual:X via future firmware update
      DTS Neo
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES
      IMAX Enhanced via future firmware update
      Auro 3D with Auro-Matic Upmixer

      Check the Price

      Onkyo TX-NR797
      Image cannot be found
      Image cannot be found
      Image cannot be found

      9. HDMI

      Onkyo TX-SR494 comes with 4 HDMI inputs. It has 1 output.

      Onkyo TX-NR797 comes with 7 HDMI inputs. It has 2 outputs - 1 Main and 1 Sub/Zone2.

      • 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
      • 4K Upscaling: Both receivers can upscale 1080p to 4K from HDMI sources. Onkyo TX-NR797 can also upscale from analog sources.
      • Analog To HDMI Upconversion: Onkyo TX-NR797 supports analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
      • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on both models).
      • HDCP 2.3 Copy Protection: Both receivers are 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)

      Both receivers support HDR10, Dolby Vision and Hybrid Log-Gamma. 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-SR494 Onkyo TX-NR797
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.32.3
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (RGB/YCbCr4:4:4)
      Video Signal Upscaling 1080p to 4K 1080p to 4K

      Check the Price

      Onkyo TX-SR494
      Image cannot be found
      Image cannot be found
      Image cannot be found

      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR797 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Line Inputs: There are 3 pair of line inputs on Onkyo TX-SR494 and 7 pair of line inputs on Onkyo TX-NR797 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:
      • Onkyo TX-SR494
        Inputs:         4   Outputs: 1
        8K Inputs: 0.
      • Onkyo TX-NR797
        Inputs:         7 (1 front)   Outputs: 2 (1 Main, 1 Sub/Zone2)
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-SR494
        Inputs:         0   Outputs: 0.
      • Onkyo TX-NR797
        Inputs:         2   Outputs: 0.
      • Component Video: Component video connection gives you the higher quality video compared to the composite video connection. So in case your old DVD player and other equipment do not have an HDMI output but have Component video output use this connection over the composite one. resolution on Component video connectors.
      • Onkyo TX-NR797 supports up to 480i/576i resolution on Component video connectors.
      • Onkyo TX-SR494
        Inputs:         0   Outputs: 0.
      • Onkyo TX-NR797
        Inputs:         1   Outputs: 0.

      Front A/V Inputs

      • Onkyo TX-SR494: None
      • Onkyo TX-NR797: HDMI, Mini-Jack

      Onkyo TX-SR494

      Image cannot be found Image cannot be found

      Onkyo TX-NR797

      Image cannot be found Image cannot be found
      TERMINALS Onkyo TX-SR494 Onkyo TX-NR797
      HDMI Inputs47 (1 front)
      HDMI Outputs12 (1 Main, 1 Sub/Zone2)
      8K Inputs
      USB Input1 (Rear)
      USB DC Out Port
      Optical Inputs11
      Optical Outputs
      Coaxial Inputs11
      RCA Line Inputs37 (1 Front)
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.2
      XLR Pre-outs
      Composite Video Inputs2
      Composite Video Outputs
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs1
      Component Video Outputs

      Check the Price

      Onkyo TX-NR797
      Image cannot be found
      Image cannot be found
      Image cannot be found

      11. Evaluations

      We evaluated Onkyo TX-SR494 and Onkyo TX-NR797 and gave them scores of 80 and 91 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-SR494

      Onkyo TX-NR797

      OVERALL
      80
      OVERALL
      91

      Amplifier

      GOOD
      81
      •   7.2 Channels
      •   Low Power Output - 80 W
      EXCELLENT
      91
      •   9.2 Channels
      •   Power Output - 100 W
      •   THX™ Certification

      Audio Features

      EXCELLENT
      85
      •   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
      EXCELLENT
      91
      •   9.2 Channels
      •   No Front Wide Channel Support
      •   9.1 Channel Processing
      •   Dolby Atmos
      •   Dolby Atmos Height Virtualization
      •   DTS:X
      •   IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI

      Video Features

      EXCELLENT
      95
      •   HDR10
      •   No HDR10+
      •   Dolby Vision
      •   No 8K Passthrough
      EXCELLENT
      95
      •   HDR10
      •   No HDR10+
      •   Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion

      Connectivity

      AVERAGE
      60
      •   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
      EXCELLENT
      85
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   Chromecast Built-In
      •   7 HDMI Inputs
      •   3 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   No RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Bluetooth 4․2

      Zones

      GOOD
      78
      •   2 Zones
      EXCELLENT
      90
      •   3 Zones

      Radio

      AVERAGE
      66
      •   Analog Tuner
      •   No Pandora
      •   No Spotify
      •   No Tidal
      EXCELLENT
      92
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal

      12. Specifications

      GENERAL Onkyo TX-SR494 Onkyo TX-NR797
      BrandOnkyoOnkyo
      ModelTX-SR494TX-NR797
      TypeA/V ReceiverA/V Receiver
      CountryEuropeNorth America
      Release Year20192019
      PredecessorOnkyo TX-NR787
      SuccessorOnkyo TX-NR7100
      AMPLIFIER Onkyo TX-SR494 Onkyo TX-NR797
      Channels7.29.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Amplifier DesignLinear Class A/B
      Dynamic Audio Amplification
      Non-Phase Shift Amplifier
      VLSC (Vector Linear Shaping Circuitry) Front L/R channels
      Optimum Gain Volume Circuitry
      THX™ Certification Select™ (previously known as Select2)
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-SR494 Onkyo TX-NR797
      Digital Signal Processing (DSP) Engine32-bit Digital Signal Processing Engines32-bit Digital Signal Processing Engines
      DACAKMAKM AK4458
      DAC Specs384 kHz/32 Bit384 kHz/32 Bit
      Maximum Channel Processing7.19.1
      Air Studios Monitor Certification
      Dolby Atmos
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic
      Dolby Digital EX
      THX Listening Modes
      DTS:X
      DTS Neural:X
      DTS Virtual:X via future firmware update
      DTS Neo
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES
      IMAX Enhanced via future firmware update
      Auro 3D with Auro-Matic Upmixer
      PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      Network Audio FormatsFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM
      Music Playback via USBFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD
      High Resolution Music Playback via USB and/or Network up to 192 kHz
      High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD
      Gapless Playback
      DSD via HDMI 2-ch 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 normalization
      Dialogue Lift
      Tone Control Front L/R Channels All Channels
      Compressed Music Enhancer Advanced Music Optimizer Advanced Music Optimizer (bluetooth included)
      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)
      CALIBRATION Onkyo TX-SR494 Onkyo TX-NR797
      Auto Speaker Calibration System with Mic. AccuEQ AccuEQ Advance with AccuReflex™
      VIDEO FEATURES Onkyo TX-SR494 Onkyo TX-NR797
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.32.3
      QMS (Quick Media Switching)
      ALLM (Auto Low Latency Mode)
      VRR (Variable Refresh Rate)
      QFT (Quick Frame transport)
      3-D Ready
      Video Signal Passthroughup to 4K/60p (RGB/YCbCr4:4:4)up to 4K/60p (RGB/YCbCr4:4:4)
      Video Signal Upscaling 1080p to 4K 1080p to 4K
      Analog To HDMI Upconversion Component**, Composite
      Component Video Upscaling
      Analog to Analog Video conversion
      Component Video Maximum Resolution480i/576i
      isf Certified Calibration Control
      CONNECTIVITY Onkyo TX-SR494 Onkyo TX-NR797
      Wi-Fi
      Bluetooth SBC, AAC SBC, AAC
      Works with Amazon Alexa
      Chromecast Built-In
      Works with SonoS
      DTS Play-Fi via Onkyo Music Control app
      MHL Input
      AirPlay AirPlay 2 after firmware update
      Apple Product Connection iPod, iPhone and iPad
      Remote AppOnkyo Controller and Music Control apps
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-SR494 Onkyo TX-NR797
      HDMI Inputs47 (1 front)
      HDMI Outputs12 (1 Main, 1 Sub/Zone2)
      8K Inputs
      USB Input1 (Rear)
      USB DC Out Port
      Optical Inputs11
      Optical Outputs
      Coaxial Inputs11
      RCA Line Inputs37 (1 Front)
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.2
      XLR Pre-outs
      Composite Video Inputs2
      Composite Video Outputs
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs1
      Component Video Outputs
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMI, Mini-Jack
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-SR494 Onkyo TX-NR797
      Number of Zones23
      Powered Zones 2 2 and 3
      Zone 2 OutsZone B Pre/Line OutHDMI, RCA Line Out (shared with Zone B)
      Zone 3 Outs
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output01 (MAIN, 100 mA)
      Remote (IR) Input/Output0 / 01 / 0
      MISCELLANEOUS Onkyo TX-SR494 Onkyo TX-NR797
      On-Screen Display Graphical User Interface with Overlaid On-Screen Display (OSD) via HDMI
      GUI Languages97
      ONKYO-RI System Control
      RIHD (Remote Interactive Over HDMI)
      Smart Grid-Ready
      RADIO Onkyo TX-SR494 Onkyo TX-NR797
      Analog Tuner FM/AM with RDS FM/AM
      Presets4040
      Digital Radio
      Internet Radio TuneIn
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-SR494 Onkyo TX-NR797
      Solid Aluminum Front
      Speaker Terminals79
      Large Speaker Terminals29
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-SR494 Onkyo TX-NR797
      Power SupplyAC 220-240 V, 50/60 HzAC 120 V, 60 Hz
      Independent Power Supply
      H.C.P.S. (High Current Power Supply) Customized Transformer
      Toroidal Transformer
      Power Consumption480 W750 W
      No Sound Power75 W
      Standby Power0.2 W0.15 W
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-SR494 Onkyo TX-NR797
      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 173.5 mm x 379.5 mm
      17-1/8" x 6-13/16" x 14-15/16"
      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"      		534 mm x 265 mm x 468 mm
      21" x 10-7/16" x 18-7/16"
      Weight8.2 kg (18.1 lb 10 oz)10.8 kg (23.8 lbs)
      Weight of Package10.5 kg (23.1 lbs)13.5 kg (29.8 lbs)
      SPECIFICATIONS Onkyo TX-SR494 Onkyo TX-NR797
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)100 W (0.08% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)160 W (10% THD)220 W (10% THD)
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)135 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)250 W
      Dynamic Power per Channel (4 Ω, Front)220 W
      Dynamic Power per Channel (8 Ω, Front)130 W
      THD0.08% (20 Hz - 20 kHz, Half power)0.08% (20 Hz - 20 kHz, Half power)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (1 kHz, 100 W/8 Ω)200 mV/47 kΩ (1 kHz, 100 W/8 Ω)
      Input Sensitivity and Impedance (Phono MM)3.5 mV/47 kΩ
      Rated Headphone Power Output80 mW (32 Ω, 1 kHz, 10% THD)85 mW (32 Ω, 1 kHz, 10% THD)
      Phono Overload70 mV (MM, 1 kHz 0.5%)
      S/N Ratio (Line, IHF-A)109 db106 dB
      S/N Ratio (Phono MM, IHF-A)80 dB
      Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Direct)10 Hz - 100 kHz/+1 dB, -3 dB (Direct)
      DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
      DSD Sampling Rates via USB2.8 MHz, 5.6 MHz, 11.2 MHz
      Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
      0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
      1 Vp-p/75 Ω (Composite)
      Ethernet Standard10BASE-T/100BASE-TX
      Wi-Fi StandardIEEE 802.11 a/b/g/n
      Wi-Fi Terminal Frequency5 GHz, 2.4 GHz
      Bluetooth Version4․24․2
      Bluetooth Frequency2.4 GHz2.4 GHz
      USB Terminal5 V, 1 AVer. 2.0, 5 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)Mono: 1.0 µV (11.2 dBf)
      AM Frequency522/530 kHz - 1611/1710 kHz530 kHz - 1710 kHz
      Warranty2 Years2 Years

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

      Amazon Affiliate Disclosure
      ZKelectronics is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for website owners to earn advertising fees by advertising and linking to Amazon (.com, .co.uk, .ca, etc) and any other websites that may be affiliated with Amazon Service LLC Associates Program.