Onkyo TX-NR555 vs Onkyo TX-NR5100

      Onkyo TX-NR555

      Onkyo TX-NR5100
      82
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      87
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      North America Europe
      Australia
      Asia
      North America
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      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
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      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, 4K/30Hz Upscaling
      • Wi-Fi, Bluetooth, Ethernet

      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-NR555
      4. Advantage of Onkyo TX-NR5100
      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-NR555 to Onkyo TX-NR5100 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. Both receivers have 7 channel amplifiers.


      Onkyo TX-NR555 Onkyo TX-NR5100

      Onkyo TX-NR555 was introduced in 2016. 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-NR5100 was introduced in 2021. 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 1080p to 4K video signal.

      We evaluated Onkyo TX-NR555 and Onkyo TX-NR5100 and gave them scores of 82 and 87 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-NR555

      Onkyo TX-NR5100

      Amplifier
      70
      Amplifier
      84
      Audio Features
      86
      Audio Features
      87
      Video Features
      92
      Video Features
      99
      Connectivity
      81
      Connectivity
      83
      Zones
      77
      Zones
      78
      Radio
      90
      Radio
      92
      OVERALL
      82
      OVERALL
      87

      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-NR555 and Onkyo TX-NR5100.

      PROS

      Onkyo TX-NR555

      Onkyo TX-NR5100

      •   Dolby Atmos
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   Chromecast Built-In
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Spotify
      •   Tidal
      •   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
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   Chromecast Built-In
      •   4 8K Inputs
      •   USB Input
      •   Ethernet
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal

      CONS

      Onkyo TX-NR555

      Onkyo TX-NR5100

      •   Low Power Output - 80 W
      •   No Front Wide Channel Support
      •   No Dolby Atmos Height Virtualization
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   1 HDMI Outputs
      •   0 8K Input
      •   No RCA Pre-Outs
      •   No Digital Radio
      •   No Pandora
      •   Low Power Output - 80 W
      •   No Front Wide Channel Support
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   4 HDMI Inputs
      •   Few RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Composite Video Inputs
      •   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-NR555

      Onkyo TX-NR5100

      •   7.2 Channels
      •   7.1 Channel Processing
      •   6 HDMI Inputs
      •   2 Zones
      •   Bluetooth 4․1 + LE
      •   7.2 Channels
      •   7.1 Channel Processing
      •   2 HDMI Outputs
      •   2 Zones
      •   Bluetooth 4․2

      3. Advantage of Onkyo TX-NR555

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR555 over Onkyo TX-NR5100.

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      Onkyo TX-NR555
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      Onkyo TX-NR555 vs Onkyo TX-NR5100
      VLSC (Vector Linear Shaping Circuitry) Front L/R channels vs
      Higher DAC Specs 384 kHz/32 Bit vs 192 kHz/24 Bit
      DTS Neo Neo:6 until firmware update vs
      Analog To HDMI Upconversion Component**, Composite vs
      More HDMI Inputs 6 vs 4
      More Optical Inputs 2 vs 1
      More RCA Line Inputs 7 (1 Front) vs 3
      Phono Input vs
      More Composite Video Inputs 2 vs
      More Component Video Inputs 2 vs
      Front A/V Inputs Mini-Jack vs
      Analog Tuner FM/AM with RDS vs FM/AM
      More Speaker Terminals 9 vs 7
      More Large Speaker Terminals 9 vs 2
      Higher Rated Headphone Power Output 85 mW (32 Ω, 1 kHz, 10% THD) vs 80 mW (32 Ω, 1 kHz, 10% THD)
      Wider AM Frequency Range 522/530 kHz - 1611/1710 kHz vs 530 kHz - 1710 kHz

      4. Advantage of Onkyo TX-NR5100

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR5100 over Onkyo TX-NR555.

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      Onkyo TX-NR5100
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      Onkyo TX-NR555 vs Onkyo TX-NR5100
      Certified 4 Ω Performance vs
      Dolby Atmos Height Virtualization vs
      DTS Virtual:X vs
      More Tone Control Channels Front L/R Channels vs Front L/R
      HDR10+ vs
      HLG vs
      Enhanced Audio Return Channel (eARC) vs
      Newer HDCP Version 2.2 (3 inputs / 1 output) vs 2.3
      QMS vs
      Auto Low Latency Mode Pass-through vs
      VRR vs
      QFT vs
      Video Signal Passthrough up to 4K/60p (RGB/YCbCr4:4:4) vs up to 8K/60p (RGB/YCbCr4:4:4)
      Works with Amazon Alexa vs
      Works with SONOS vs
      DTS Play-Fi vs
      AirPlay AirPlay vs AirPlay 2
      More HDMI Outputs 1 vs 2 (simultaneous)
      More 8K Inputs vs 4
      Zone 2 Outs RCA Line Out vs RCA Pre/Line Out (shared with Zone B)
      Pandora vs
      Bigger Power Supply 450 W vs 490 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 130 W (1% THD) vs 165 W (1% THD)
      Higher DSD Sampling Rate via USB 2.8 MHz, 5.6 MHz vs 2.8 MHz, 5.6 MHz, 11.2 MHz
      Wi-Fi Standard IEEE 802.11 a/b/g/n vs IEEE 802.11 a/b/g/n/ac
      Newer Bluetooth Version 4․1 + LE vs 4․2
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      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-NR555 Onkyo TX-NR5100
        Dolby Atmos up to 5.1.2
        DTS:X up to 5.1.2
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ AccuEQ with subwoofer EQ and AccuReflex™
        HDR10
        Dolby Vision
        New HDCP Version2.2 (3 inputs / 1 output)2.3
        Wi-Fi
        Bluetooth SBC, AAC SBC, AAC, aptX, aptX HD
        Chromecast Built-In
        USB Input1 (Rear)1 (Rear)
        Ethernet
        Analog Tuner FM/AM with RDS FM/AM
        Spotify
        Tidal
      WEAKNESSES Onkyo TX-NR555 Onkyo TX-NR5100
        Low Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        No Front Wide Channel Support
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No RCA Pre-Outs0.20.2
        No Digital Radio

      6. Amplifier

      Onkyo TX-NR555 Onkyo TX-NR5100

      7 channel Amplifier: Onkyo TX-NR555 features 7 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

      7 channel Amplifier: Onkyo TX-NR5100 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.
      • Dynamic Audio Amplification: Onkyo TX-NR555 and Onkyo TX-NR5100 feature 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.


      AMPLIFIER Onkyo TX-NR555 Onkyo TX-NR5100
      Channels7.27.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Dynamic Audio Amplification
      Non-Phase Shift Amplifier
      VLSC (Vector Linear Shaping Circuitry) Front L/R channels
      THX™ Certification
      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-NR555
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      7. Speaker Configurations

      Onkyo TX-NR555's and Onkyo TX-NR5100's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • Onkyo TX-NR555: 5.2.2 with internal amplifier.
      • Onkyo TX-NR5100: 5.2.2 with internal amplifier.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • Onkyo TX-NR555: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
      • Onkyo TX-NR5100: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Onkyo TX-NR555: 5.2, 7.2 with internal amplifier.
      • Onkyo TX-NR5100: 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-NR555 and Onkyo TX-NR5100 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: Onkyo TX-NR5100 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-NR555 and Onkyo TX-NR5100 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: Onkyo TX-NR555 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: 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.
      AUDIO DECODING Onkyo TX-NR555 Onkyo TX-NR5100
      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
      Dolby Digital EX
      DTS:X up to 5.1.2
      DTS Neural:X after firmware update
      DTS Virtual:X
      DTS Neo Neo:6 until firmware update
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer

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      Onkyo TX-NR5100
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      9. HDMI

      Onkyo TX-NR555 comes with 6 HDMI inputs. It has 1 output.

      Onkyo TX-NR5100 comes with 4 HDMI 2.1 inputs with 8K support. It has 2 outputs which work parallelly and output the same signal.

      • 4K/60Hz Passthrough on Onkyo TX-NR555: All inputs pass up to 4K/60p (RGB/YCbCr4:4:4) video signal.
        8K/60Hz and 4K/120Hz Passthrough on Onkyo TX-NR5100: All inputs pass up to 8K/60p (RGB/YCbCr4:4:4) video signal.
      • 4K Upscaling: Both receivers can upscale 1080p to 4K from HDMI sources. Onkyo TX-NR555 can also upscale from analog sources.
      • Analog To HDMI Upconversion: Onkyo TX-NR555 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 Copy Protection: Onkyo TX-NR555 is HDCP 2.2 and Onkyo TX-NR5100 is HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • Quick Media Switching (QMS): With HDMI 2.1a, Quick Media Switching for movies and video uses the HDMI VRR mechanism to eliminate the blackout period when an HDMI Source device switches its video mode. As long as the resolution remains the same and only the frame rate changes, QMS will instantly switch between frame rates. QMS eliminates A/V blackouts by using VRR technology to change frame rates, allowing instant changes from 24Hz to 60Hz frame rate, and anywhere in-between. The viewer never sees blank screens and gets a seamless experience (available on Onkyo TX-NR5100 only).
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      Onkyo TX-NR555 supports HDR10 and Dolby Vision.

      Onkyo TX-NR5100 supports HDR10, 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.


      Enhanced Audio Return Channel (eARC)

      Onkyo TX-NR5100 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

      Onkyo TX-NR5100 supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.



      VIDEO FEATURES Onkyo TX-NR555 Onkyo TX-NR5100
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.2 (3 inputs / 1 output)2.3
      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 8K/60p (RGB/YCbCr4:4:4)
      Video Signal Upscaling 1080p to 4K 1080p to 4K

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      Onkyo TX-NR555
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      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR555 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Line Inputs: There are 7 pair of line inputs on Onkyo TX-NR555 and 3 pair of line inputs on Onkyo TX-NR5100 for connecting sources with analog outputs.
      • Digital Inputs: 2 optical inputs and 1 coaxial input are available on Onkyo TX-NR555 and 1 optical input and 1 coaxial input are available on Onkyo TX-NR5100 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-NR555
        Inputs:         6   Outputs: 1
        8K Inputs: 0.
      • Onkyo TX-NR5100
        Inputs:         4   Outputs: 2 (simultaneous)
        8K Inputs: 4.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-NR555
        Inputs:         2   Outputs: 0.
      • Onkyo TX-NR5100
        Inputs:         0   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.
      • Onkyo TX-NR555 supports up to 480i/576i resolution on Component video connectors. resolution on Component video connectors.
      • Onkyo TX-NR555
        Inputs:         2   Outputs: 0.
      • Onkyo TX-NR5100
        Inputs:         0   Outputs: 0.

      Front A/V Inputs

      • Onkyo TX-NR555: Mini-Jack
      • Onkyo TX-NR5100: None

      Onkyo TX-NR555

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      Onkyo TX-NR5100

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      TERMINALS Onkyo TX-NR555 Onkyo TX-NR5100
      HDMI Inputs64
      HDMI Outputs12 (simultaneous)
      8K Inputs4
      USB Input1 (Rear)1 (Rear)
      USB DC Out Port
      Optical Inputs21
      Optical Outputs
      Coaxial Inputs11
      RCA Line Inputs7 (1 Front)3
      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 Inputs2
      Component Video Outputs

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      Onkyo TX-NR5100
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      11. Evaluations

      We evaluated Onkyo TX-NR555 and Onkyo TX-NR5100 and gave them scores of 82 and 87 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-NR555

      Onkyo TX-NR5100

      OVERALL
      82
      OVERALL
      87

      Amplifier

      GOOD
      70
      •   7.2 Channels
      •   Low Power Output - 80 W
      GOOD
      84
      •   7.2 Channels
      •   Low Power Output - 80 W

      Audio Features

      EXCELLENT
      86
      •   7.2 Channels
      •   No Front Wide Channel Support
      •   7.1 Channel Processing
      •   Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI
      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

      Video Features

      EXCELLENT
      92
      •   HDR10
      •   No HDR10+
      •   Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion
      EXCELLENT
      99
      •   HDR10
      •   HDR10+
      •   Dolby Vision
      •   HDMI 2.1
      •   Auto Low Latency Mode Pass-through
      •   VRR
      •   QFT
      •   8K Passthrough

      Connectivity

      GOOD
      81
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   Chromecast Built-In
      •   6 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   No RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Bluetooth 4․1 + LE
      GOOD
      83
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   Google Assistant
      •   Chromecast Built-In
      •   4 HDMI Inputs
      •   2 HDMI Outputs
      •   4 8K Inputs
      •   USB Input
      •   Few RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Composite Video Inputs
      •   Ethernet
      •   Bluetooth 4․2

      Zones

      GOOD
      77
      •   2 Zones
      GOOD
      78
      •   2 Zones

      Radio

      EXCELLENT
      90
      •   Analog Tuner
      •   No Pandora
      •   Spotify
      •   Tidal
      EXCELLENT
      92
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal

      12. Specifications

      GENERAL Onkyo TX-NR555 Onkyo TX-NR5100
      BrandOnkyoOnkyo
      ModelTX-NR555TX-NR5100
      TypeA/V ReceiverA/V Receiver
      CountryAustraliaNorth America
      Release Year20162021
      PredecessorOnkyo TX-NR545 Onkyo TX-NR595
      SuccessorOnkyo TX-NR575E
      AMPLIFIER Onkyo TX-NR555 Onkyo TX-NR5100
      Channels7.27.2
      Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      Dynamic Audio Amplification
      Non-Phase Shift Amplifier
      VLSC (Vector Linear Shaping Circuitry) Front L/R channels
      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
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-NR555 Onkyo TX-NR5100
      Digital Signal Processing (DSP) EngineAdvanced 32-bit DSP Chip32-bit Digital Signal Processing Engines
      DACAKM AK4458 (8 Channels x 1)
      DAC Specs384 kHz/32 Bit192 kHz/24 Bit
      Maximum Channel Processing7.17.1
      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
      Dolby Digital EX
      THX Listening Modes
      Surround EX
      DTS:X up to 5.1.2
      DTS Neural:X after firmware update
      DTS Virtual:X
      DTS Neo Neo:6 until firmware update
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES
      IMAX Enhanced
      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, LPCMFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, MPEG-4 AAC, LPCM
      Music Playback via USBFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHDFLAC, WAV, Apple Lossless, WMA, MP3, DSD, AIFF, AAC, Dolby TrueHD
      High Resolution Music Playback via USB and/or Network up to 192 kHz up to 192 kHz
      High Resolution Audio Formats via USBFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHDFLAC, WAV, Apple Lossless, DSD, AIFF, AAC, Dolby TrueHD
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      DSD via USB 2-ch Input 2-ch Input
      DSD to PCM Converter
      USB DAC
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio 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 Front L/R
      Compressed Music Enhancer Advanced Music Optimizer (bluetooth included) 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)
      CALIBRATION Onkyo TX-NR555 Onkyo TX-NR5100
      Auto Speaker Calibration System with Mic. AccuEQ with AccuReflex™ AccuEQ with subwoofer EQ and AccuReflex™
      VIDEO FEATURES Onkyo TX-NR555 Onkyo TX-NR5100
      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 Version2.2 (3 inputs / 1 output)2.3
      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 8K/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-NR555 Onkyo TX-NR5100
      Wi-Fi
      Bluetooth SBC, AAC SBC, AAC, aptX, aptX HD
      Works with Amazon Alexa
      Google Assistant
      Chromecast Built-In
      Apple Siri
      Works with SonoS
      DTS Play-Fi
      MHL Input
      AirPlay AirPlay AirPlay 2
      Apple Product Connection iPod, iPhone and iPad iPod, iPhone and iPad
      Remote AppOnkyo Remote App for iPod touch/iPhone and Android-Powered DevicesOnkyo Controller and Music Control apps
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-NR555 Onkyo TX-NR5100
      HDMI Inputs64
      HDMI Outputs12 (simultaneous)
      8K Inputs4
      USB Input1 (Rear)1 (Rear)
      USB DC Out Port
      Optical Inputs21
      Optical Outputs
      Coaxial Inputs11
      RCA Line Inputs7 (1 Front)3
      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 Inputs2
      Component Video Outputs
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsMini-Jack
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-NR555 Onkyo TX-NR5100
      Number of Zones22
      Powered Zones 2 2
      Zone 2 OutsRCA Line OutRCA Pre/Line Out (shared with Zone B)
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output00
      Remote (IR) Input/Output0 / 00 / 0
      MISCELLANEOUS Onkyo TX-NR555 Onkyo TX-NR5100
      On-Screen Display Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up
      GUI Languages9
      Remote ControllerRC-986R
      ONKYO-RI System Control
      RIHD (Remote Interactive Over HDMI)
      Pre-Pro/Learning Remote /
      On Screen Remote Programming
      Bi-directional Remote Setup via GUI
      Smart Grid-Ready
      RADIO Onkyo TX-NR555 Onkyo TX-NR5100
      Analog Tuner FM/AM with RDS FM/AM
      Presets4040
      Digital Radio
      Internet Radio TuneIn TuneIn
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-NR555 Onkyo TX-NR5100
      Solid Aluminum Front
      Speaker Terminals97
      Large Speaker Terminals92
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-NR555 Onkyo TX-NR5100
      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 Custom High-Current Low-Noise Power Transformer
      Toroidal Transformer
      Power Consumption450 W490 W
      No Sound Power55 W45 W
      Standby Power0.1 W0.1 W
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-NR555 Onkyo TX-NR5100
      Dimensions (W x H x D)435 mm x 173.5 mm x 378 mm
      17-1/8" x 6-13/16" x 14-7/8"      		435 mm x 160 mm x 327.8 mm
      17-1/8" x 6-5/16" x 12-7/8"
      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"
      Weight9.6 kg (21.2 lbs)8.4 kg (18.5 lbs)
      Weight of Package10.5 kg (23.1 lbs)
      SPECIFICATIONS Onkyo TX-NR555 Onkyo TX-NR5100
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.08% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)160 W (10% THD)
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)130 W (1% THD)165 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)160 W160 W
      Dynamic Power per Channel (4 Ω, Front)125 W125 W
      Dynamic Power per Channel (8 Ω, Front)85 W85 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 Preout Level and Impedance1 V/470 Ω (subwoofer)
      Rated Headphone Jack Output Level and Impedance330 Ω
      Rated Headphone Power Output85 mW (32 Ω, 1 kHz, 10% THD)80 mW (32 Ω, 1 kHz, 10% THD)
      Phono Overload70 mV (MM, 1 kHz 0.5%)
      S/N Ratio (Line, IHF-A)106 dB106 dB
      S/N Ratio (Phono MM, IHF-A)80 dB
      Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Direct/Pure Audio)10 Hz - 100 kHz/+1 dB, -3 dB (Direct/Pure Audio)
      DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
      DSD Sampling Rates via USB2.8 MHz, 5.6 MHz2.8 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-TX10BASE-T/100BASE-TX
      Wi-Fi StandardIEEE 802.11 a/b/g/nIEEE 802.11 a/b/g/n/ac
      Wi-Fi Terminal Frequency5 GHz, 2.4 GHz5 GHz, 2.4 GHz
      Bluetooth Version4․1 + LE4․2
      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)
      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

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