Onkyo TX-NR646 vs Onkyo TX-NR414

      Onkyo TX-NR646

      Onkyo TX-NR414
      82
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      66
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      USA
      Taiwan Europe, Australia and Asia Others
      USA
      Taiwan
      Europe and Australia Others
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      Highlights

      • 7.2 Channels
      • 7.1 Channel Processing
      • 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • Dolby Atmos, DTS:X
      • HDR10
      • 4K/60Hz Passthrough
      • Wi-Fi, Bluetooth, Ethernet
      • Phono Input

      Highlights

      • 5.1 Channels
      • 5.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • 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-NR646
      4. Advantage of Onkyo TX-NR414
      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-NR646 to Onkyo TX-NR414 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-NR646 has 7 channel and the Onkyo TX-NR414 has 5 channel amplifiers with Onkyo TX-NR646's being more powerful.


      Onkyo TX-NR646 Onkyo TX-NR414

      Onkyo TX-NR646 was introduced in 2015. It is equipped with 7 channel amplifier with 100 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 video signal.

      Onkyo TX-NR414 was introduced in 2012. It is equipped with 5 channel amplifier with 80 W (8 Ω, 20 Hz - 20 kHz and 2 channel driven) power per channel and is capable of 5.1 maximum channel processing. It , passes 1080/60p video signal.

      We evaluated Onkyo TX-NR646 and Onkyo TX-NR414 and gave them scores of 82 and 66 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-NR646

      Onkyo TX-NR414

      Amplifier
      81
      Amplifier
      76
      Audio Features
      84
      Audio Features
      66
      Video Features
      80
      Video Features
      46
      Connectivity
      83
      Connectivity
      74
      Zones
      77
      Zones
      64
      Radio
      93
      Radio
      85
      OVERALL
      82
      OVERALL
      66

      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-NR646 and Onkyo TX-NR414.

      PROS

      Onkyo TX-NR646

      Onkyo TX-NR414

      •   Dolby Atmos
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   New HDCP Version
      •   Analog To HDMI Upconversion
      •   Wi-Fi
      •   Bluetooth
      •   8 HDMI Inputs
      •   USB Input
      •   Many RCA Line Inputs
      •   Phono Input
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Independent Power Supply
      •   DSD via HDMI
      •   New HDCP Version
      •   USB Input
      •   Many RCA Line Inputs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Pandora
      •   Spotify

      CONS

      Onkyo TX-NR646

      Onkyo TX-NR414

      •   No Front Wide Channel Support
      •   No Dolby Atmos Height Virtualization
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   Does not Work with Amazon Alexa
      •   0 8K Input
      •   No RCA Pre-Outs
      •   No Digital Radio
      •   No Tidal
      •   Bluetooth 2․1 + EDR
      •   Few Channels - 5.1
      •   Low Power Output - 80 W
      •   5.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   No Auto Speaker Calibration System with Mic.
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   1 HDMI Outputs
      •   0 8K Input
      •   No Phono Input
      •   No RCA Pre-Outs
      •   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-NR646

      Onkyo TX-NR414

      •   7.2 Channels
      •   Power Output - 100 W
      •   7.1 Channel Processing
      •   2 HDMI Outputs
      •   2 Zones
      •   Wi-Fi
      •   6 HDMI Inputs
      •   2 Zones

      3. Advantage of Onkyo TX-NR646

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR646 over Onkyo TX-NR414.

      Check the Price

      Onkyo TX-NR646
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      Onkyo TX-NR646 vs Onkyo TX-NR414
      More Channels 7.2 vs 5.1
      Higher Power Output 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) vs 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Bi-amp capability vs
      Higher DAC Specs 384 kHz/32 Bit vs 192 kHz/24 Bit
      More Channel Processing 7.1 vs 5.1
      Dolby Atmos up to 5.1.2 after firmware update vs
      Dolby Surround Upmixer vs
      DTS:X up to 5.1.2 after firmware update vs
      DTS-ES vs
      Music Playback via USB FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHD vs FLAC, WAV, WMA, WMA Lossless, Ogg, MP3, LPCM, AAC
      High Resolution Audio Formats via USB FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC vs FLAC, WAV, WMA Lossless, LPCM, AAC
      Gapless Playback vs
      DSD via USB 2-ch Input vs
      DTS Dialog Control vs
      Dialog Level Adjustment DTS:X only vs
      Phase-Matching Bass Boost for Deep Bass and Clear Mid-Range vs
      More Advanced Auto Speaker Calibration System AccuEQ Advance vs
      HDR10 vs
      Video Signal Passthrough up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit) vs up to 1080p
      Analog To HDMI Upconversion Component**, Composite vs
      Wi-Fi vs via Front USB (optional UWF-1 sold separately)
      Bluetooth vs
      AirPlay AirPlay vs
      More HDMI Inputs 8 (1 front) vs 6
      More HDMI Outputs 2 (simultaneous) vs 1
      More RCA Line Inputs 7 vs 6 (1 front)
      More RCA Line Outputs 1 vs
      Phono Input vs
      More Powered Zones 2 vs
      On Screen Remote Programming vs
      Smart Grid-Ready vs
      Deezer vs
      SiriusXM vs
      More Speaker Terminals 9 vs 5
      More Large Speaker Terminals 9 vs 5
      Independent Power Supply 2 vs
      Higher Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) 100 W (0.08% THD) vs 80 W (0.7% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) 170 W (0.9% THD) vs 130 W (1% THD)
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA) 175 W vs 160 W
      Higher Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) 160 W (1% THD) vs 130 W (1% THD)
      Higher Dynamic Power per Channel, 3 Ω, Front) 240 W vs 180 W
      Higher Dynamic Power per Channel, 4 Ω, Front) 210 W vs 160 W
      Higher Dynamic Power per Channel, 8 Ω, Front) 120 W vs 100 W
      Higher DSD Sampling Rate via HDMI 2.8 MHz, 5.6 MHz vs 2.8 MHz

      4. Advantage of Onkyo TX-NR414

      This section shows those features and specifications which are the reason to choose Onkyo TX-NR414 over Onkyo TX-NR646.

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      Onkyo TX-NR414
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      Onkyo TX-NR646 vs Onkyo TX-NR414
      Dolby Pro Logic vs PLII
      Higher Resolution Music Playback via USB up to 96 kHz vs up to 192 kHz
      More Coaxial Inputs/Outputs 1 vs 2
      More Composite Video Inputs 3 vs 5 (1 front)
      More Composite Video Outputs vs 1
      More Component Video Outputs vs 1
      Front A/V Inputs HDMI vs USB, Composite Video, RCA Audio
      Detachable Power Cord vs
      Color-Coded Speaker Terminals vs

      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-NR646 Onkyo TX-NR414
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        New HDCP Version2.2 (3 inputs / 2 outputs)2.2
        USB Input1 (Rear)1 Front (for iPod/iPhone)
        Many RCA Line Inputs76 (1 front)
        Composite Video Inputs35 (1 front)
        Component Video Inputs22
        Ethernet
        Analog Tuner FM/AM FM/AM
        Pandora
        Spotify
      WEAKNESSES Onkyo TX-NR646 Onkyo TX-NR414
        No Dolby Atmos Height Virtualization
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No Dolby Vision
        No eARC
        No 8K Passthroughup to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit)up to 1080p
        Does not Work with Amazon Alexa
        Few 8K Inputs
        No RCA Pre-Outs0.20.1
        No Digital Radio
        No Tidal

      6. Amplifier

      Onkyo TX-NR646 Onkyo TX-NR414

      7 channel Amplifier: Onkyo TX-NR646 features 7 channel power amplifier. It is rated at 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

      5 channel Amplifier: Onkyo TX-NR414 features 5 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).
      • WRAT (Wide Range Amp Technology): Onkyo TX-NR646 and Onkyo TX-NR414 feature 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.


      AMPLIFIER Onkyo TX-NR646 Onkyo TX-NR414
      Channels7.25.1
      Power Output100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)

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      Onkyo TX-NR646
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      7. Speaker Configurations

      Onkyo TX-NR646's and Onkyo TX-NR414's amplifiers can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • Onkyo TX-NR646: 5.2.2 with internal amplifier.
      • Onkyo TX-NR414: Not supported.
      • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
      • Onkyo TX-NR646: The speaker configurations for DTS:X are the same as for Dolby Atmos - 5.2.2 with internal amplifier.
      • Onkyo TX-NR414: Not supported.
      • Configurations without height channels: There are also other speaker configurations available which do not include height channels:
      • Onkyo TX-NR646: 5.2, 7.2 with internal amplifier.
      • Onkyo TX-NR414: 5.1 with internal amplifier.
      • Bi-Amp: Onkyo TX-NR646 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-NR646 supports Dolby Atmos.

      • Dolby Surround Upmixer: Onkyo TX-NR646 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.

      DTS:X

      Onkyo TX-NR646 supports DTS:X.

      • DTS Dialog Control: Onkyo TX-NR646 supports DTS Dialog Control. This function adjusts the dialog levels during playback of the DTS:X stream. It allows you to separately increase the dialog levels in contrast with the background sound and hear dialog easily even under noisy circumstances.
      AUDIO DECODING Onkyo TX-NR646 Onkyo TX-NR414
      Dolby Atmos up to 5.1.2 after firmware update
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLII
      Surround EX
      DTS:X up to 5.1.2 after firmware update
      DTS Neural:X after firmware update
      DTS Virtual:X
      DTS Neo Neo:6 until firmware update Neo:6
      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-NR414
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      9. HDMI

      Onkyo TX-NR646 comes with 8 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

      Onkyo TX-NR414 comes with 6 HDMI inputs. It has 1 output.

      • 4K/60Hz Passthrough on Onkyo TX-NR646: All inputs pass up to 4K/60p (RGB/YCbCr4:4:4/YCbCr4:2:2, 24 bit) video signal.
        1080/60p Passthrough on Onkyo TX-NR414: All inputs pass up to 1080p video signal.
      • Analog To HDMI Upconversion: Onkyo TX-NR646 supports analog to HDMI Upconversion, so you can input your analog video sources and output them digitally via HDMI. This means that you will need only one HDMI cable to connect to your TV.
      • HDCP 2.2 Copy Protection: Both receivers are HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Both receivers are able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      Onkyo TX-NR646 supports HDR10

      Onkyo TX-NR414 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-NR646 Onkyo TX-NR414
      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 / 2 outputs)2.2
      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/YCbCr4:2:2, 24 bit)up to 1080p
      Video Signal Upscaling

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      Onkyo TX-NR646
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      10. Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input on Onkyo TX-NR646 with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the receiver.
      • Analog Line Inputs and Outputs: There are 7 pair of line inputs on Onkyo TX-NR646 and 6 pair of line inputs on Onkyo TX-NR414 for connecting sources with analog outputs. There is also 1 pair of line outputs on Onkyo TX-NR646.
      • Digital Inputs: 2 optical inputs and 1 coaxial input are available on Onkyo TX-NR646 and 2 optical inputs and 2 coaxial inputs are available on Onkyo TX-NR414 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-NR646
        Inputs:         8 (1 front)   Outputs: 2 (simultaneous)
        8K Inputs: 0.
      • Onkyo TX-NR414
        Inputs:         6   Outputs: 1
        8K Inputs: 0.
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Onkyo TX-NR646
        Inputs:         3   Outputs: 0.
      • Onkyo TX-NR414
        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.
      • Onkyo TX-NR646 supports up to 480i/576i resolution on Component video connectors. resolution on Component video connectors.
      • Onkyo TX-NR646
        Inputs:         2   Outputs: 0.
      • Onkyo TX-NR414
        Inputs:         2   Outputs: 1.

      Front A/V Inputs

      • Onkyo TX-NR646: HDMI
      • Onkyo TX-NR414: USB, Composite Video, RCA Audio

      Onkyo TX-NR646

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      Onkyo TX-NR414

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      TERMINALS Onkyo TX-NR646 Onkyo TX-NR414
      HDMI Inputs8 (1 front)6
      HDMI Outputs2 (simultaneous)1
      8K Inputs
      USB Input1 (Rear)1 Front (for iPod/iPhone)
      USB DC Out Port
      Optical Inputs22
      Optical Outputs
      Coaxial Inputs12
      RCA Line Inputs76 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.1
      XLR Pre-outs
      Composite Video Inputs35 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs22
      Component Video Outputs1

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      Onkyo TX-NR414
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      11. Evaluations

      We evaluated Onkyo TX-NR646 and Onkyo TX-NR414 and gave them scores of 82 and 66 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-NR646

      Onkyo TX-NR414

      OVERALL
      82
      OVERALL
      66

      Amplifier

      GOOD
      81
      •   7.2 Channels
      •   Power Output - 100 W
      •   Independent Power Supply
      GOOD
      76
      •   Few Channels - 5.1
      •   Low Power Output - 80 W

      Audio Features

      GOOD
      84
      •   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
      AVERAGE
      66
      •   Few Channels - 5.1
      •   5.1 Channel Processing
      •   No Dolby Atmos
      •   No Dolby Atmos Height Virtualization
      •   No DTS:X
      •   No IMAX Enhanced
      •   No Auro 3D with Auro-Matic Upmixer
      •   DSD via HDMI

      Video Features

      GOOD
      80
      •   HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough
      •   Analog To HDMI Upconversion
      POOR
      46
      •   No HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No 8K Passthrough

      Connectivity

      GOOD
      83
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Does not Work with Amazon Alexa
      •   8 HDMI Inputs
      •   2 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 2․1 + EDR
      GOOD
      74
      •   No eARC
      •   New HDCP Version
      •   Wi-Fi
      •   No Bluetooth
      •   Does not Work with Amazon Alexa
      •   6 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   Many RCA Line Inputs
      •   No Phono Input
      •   No RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet

      Zones

      GOOD
      77
      •   2 Zones
      AVERAGE
      64
      •   2 Zones

      Radio

      EXCELLENT
      93
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal
      EXCELLENT
      85
      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   No Tidal

      12. Specifications

      GENERAL Onkyo TX-NR646 Onkyo TX-NR414
      BrandOnkyoOnkyo
      ModelTX-NR646TX-NR414
      TypeA/V ReceiverA/V Receiver
      CountryUSATaiwan
      Release Year20152012
      PredecessorOnkyo TX-NR636
      SuccessorOnkyo TX-NR656
      AMPLIFIER Onkyo TX-NR646 Onkyo TX-NR414
      Channels7.25.1
      Power Output100 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
      WRAT (Wide Range Amplifier Technology)
      VLSC (Vector Linear Shaping Circuitry)
      Optimum Gain Volume Circuitry
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Discrete Output Stage Circuitry
      3-Stage Inverted Darlington Circuitry
      PUSH-PULL Design
      Independent Block Construction (Amp/Preprocessor)
      Bi-amp Capability
      BTL (Bridged Transless or Bridging)
      AUDIO FEATURES Onkyo TX-NR646 Onkyo TX-NR414
      Digital Processing Crossover Network
      Digital Signal Processing (DSP) EngineDual 32-bit DSP for Powerful Advanced ProcessingAdvanced 32-Bit Processing DSP Chip
      DACAsahi Kasei AK4458Burr-Brown
      DAC Specs384 kHz/32 Bit192 kHz/24 Bit
      Maximum Channel Processing7.15.1
      Air Studios Monitor Certification
      Dolby Atmos up to 5.1.2 after firmware update
      Dolby Atmos Height Virtualization
      Dolby Atmos Music
      Dolby TrueHD
      Dolby Digital Plus
      Dolby Surround Upmixer
      Dolby Pro Logic PLII
      Dolby Digital EX
      Surround EX
      DTS:X up to 5.1.2 after firmware update
      DTS Neural:X after firmware update
      DTS Virtual:X
      DTS Neo Neo:6 until firmware update Neo:6
      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
      Music Playback via USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TrueHDFLAC, WAV, WMA, WMA Lossless, Ogg, MP3, LPCM, AAC
      High Resolution Music Playback via USB and/or Network up to 96 kHz up to 192 kHz
      High Resolution Audio Formats via USBFLAC, WAV, WMA Lossless, Apple Lossless, DSD, AACFLAC, WAV, WMA Lossless, LPCM, AAC
      Gapless Playback
      DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
      DSD via USB 2-ch Input
      DSD to PCM Converter
      USB DAC
      Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
      DTS Dialogue Control
      Dialog Enhancement
      Dialog Level Adjustment DTS:X only
      Dialog normalization
      Dialogue Lift
      Tone Control Front L/R Channels Front L/R Channels
      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 for Deep Bass and Clear Mid-Range
      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-NR646 Onkyo TX-NR414
      Auto Speaker Calibration System with Mic. AccuEQ Advance
      VIDEO FEATURES Onkyo TX-NR646 Onkyo TX-NR414
      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 / 2 outputs)2.2
      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/YCbCr4:2:2, 24 bit)up to 1080p
      Video Signal Upscaling
      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-NR646 Onkyo TX-NR414
      Wi-Fi via Front USB (optional UWF-1 sold separately)
      Bluetooth
      Works with Amazon Alexa
      Chromecast Built-In
      Works with SonoS
      DTS Play-Fi
      MHL Input
      DLNA 1.5
      AirPlay AirPlay
      Apple Product Connection iPod, iPhone and iPad iPod and iPhone via front USB
      Remote AppOnkyo Remote App for iPod touch/iPhone and Android-Powered Devices iPod touch/iPhone and Android-Powered Devices
      InstaPrevue Input Source Prevue
      TERMINALS Onkyo TX-NR646 Onkyo TX-NR414
      HDMI Inputs8 (1 front)6
      HDMI Outputs2 (simultaneous)1
      8K Inputs
      USB Input1 (Rear)1 Front (for iPod/iPhone)
      USB DC Out Port
      Optical Inputs22
      Optical Outputs
      Coaxial Inputs12
      RCA Line Inputs76 (1 front)
      RCA Line Outputs1
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs0.20.1
      XLR Pre-outs
      Composite Video Inputs35 (1 front)
      Composite Video Outputs1
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs22
      Component Video Outputs1
      Ethernet
      Ethernet Switch
      PC In
      Front A/V InputsHDMIUSB, Composite Video, RCA Audio
      Speaker A/B
      Headphone Out6.3 mm (1/4")6.3 mm (1/4")
      Detachable Power Cord
      uport
      ZONES Onkyo TX-NR646 Onkyo TX-NR414
      Number of Zones22
      Powered Zones 2
      Zone 2 OutsRCA Line OutRCA Line Out
      Whole House Mode
      RS-232C Interface
      +12V Trigger Output0
      Remote (IR) Input/Output0 / 0
      MISCELLANEOUS Onkyo TX-NR646 Onkyo TX-NR414
      On-Screen Display Graphical Overlaid On-Screen Display (OSD) via HDMI with Quick Set-Up Basic Overlay
      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-NR646 Onkyo TX-NR414
      Analog Tuner FM/AM FM/AM
      Presets4040
      Digital Radio
      Internet Radio TuneIn vTuner
      Pandora
      Spotify
      Tidal
      Deezer
      Napster
      SiriusXM
      CONSTRUCTION Onkyo TX-NR646 Onkyo TX-NR414
      Solid Aluminum Front
      Speaker Terminals95
      Large Speaker Terminals95
      Color-Coded Speaker Terminals
      Transparent High-Grade Speaker Terminals
      Gold plated RCA terminals
      POWER Onkyo TX-NR646 Onkyo TX-NR414
      Power SupplyAC 120 V, 60 HzAC 120 V, 60 Hz
      Independent Power Supply2
      H.C.P.S. (High Current Power Supply) Massive High Power Transformer Massive High Power Transformer
      Toroidal Transformer
      Power Consumption6.4 A4.2 A
      No Sound Power70 W55 W
      Standby Power0.1 W0.2 W
      Capacitor Bank8,200 µF
      ECO Mode / Hybrid Standby Function
      PHYSICAL Onkyo TX-NR646 Onkyo TX-NR414
      Dimensions (W x H x D)435 mm x 173.5 mm x 329 mm
      17-1/8" x 6-13/16" x 12-15/16"      		435 mm x 173.5 mm x 328 mm
      17-1/8" x 6-13/16" x 12-15/16"
      Weight9.4 kg (20.7 lbs)8.6 kg (19.0 lbs)
      SPECIFICATIONS Onkyo TX-NR646 Onkyo TX-NR414
      Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)100 W (0.08% THD)80 W (0.7% THD)
      Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)110 W (0.9% THD)
      Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)170 W (0.9% THD)130 W (1% THD)
      Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)175 W160 W
      Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)160 W (1% THD)130 W (1% THD)
      Dynamic Power per Channel (3 Ω, Front)240 W180 W
      Dynamic Power per Channel (4 Ω, Front)210 W160 W
      Dynamic Power per Channel (8 Ω, Front)120 W100 W
      THD0.08% (20 Hz - 20 kHz, Half power)0.08% (20 Hz - 20 kHz, half power)
      Damping Factor60 (Front, 1 kHz, 8 Ω)60 (Front, 1 kHz, 8 Ω)
      Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)200 mV/47 kΩ (Line)
      Input Sensitivity and Impedance (Phono MM)3.5 mV/47 kΩ (Phono mm)
      Rated Lineout Level and Impedance200 mV/2.2 kΩ
      Maximum Lineout Level and Impedance2 V/2.2 kΩ
      Phono Overload70 mV (MM, 1 kHz 0.5% Direct)
      S/N Ratio (Line, IHF-A)100 dB100 dB
      S/N Ratio (Phono MM, IHF-A)80 dB
      Frequency Response (Analog In)10 Hz - 100 kHz/+1 dB, -3 dB (Direct mode)5 Hz - 100 kHz/+1 dB, -3 dB (DSP bypass)
      DSD Sampling Rates via HDMI2.8 MHz, 5.6 MHz2.8 MHz
      DSD Sampling Rates via USB2.8 MHz, 5.6 MHz
      Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
      0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
      1 Vp-p/75 Ω (Composite)      		1 Vp-p/75 Ω (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)5 Hz - 100 MHz/+0 dB, -3 dB (Component)
      Ethernet Standard10BASE-T/100BASE-TX100BASE-TX
      Wi-Fi StandardIEEE 802.11 b/g/n
      Wi-Fi Terminal Frequency2.4 GHz
      Bluetooth Version2․1 + EDR
      Bluetooth Frequency2.4 GHz
      USB Terminal5 V, 1 A
      FM Frequency87.5 MHz - 107.9 MHz87.5 MHz - 108.0 MHz
      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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