Yamaha RX-A550 vs Yamaha RX-A670

       
       

      Highlights

      • 5.1 Channels
      • 5.1 Channel Processing
      • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      • 4K/60Hz Passthrough
      • Wi-Fi, Bluetooth, Ethernet

      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/60Hz Upscaling
      • Wi-Fi, Bluetooth, Ethernet

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

      1. Overview

      Here we are comparing Yamaha RX-A550 to Yamaha RX-A670 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 Yamaha RX-A550 has 5 channel and the Yamaha RX-A670 has 7 channel and equally powerful amplifiers.


      Yamaha RX-A550 Yamaha RX-A670

      Yamaha RX-A550 was introduced in 2015. 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 4K/60Hz and upscales up to 1080p video signal.

      Yamaha RX-A670 was introduced in 2017. 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 up to 4K 60p 4:4:4 video signal.


      We evaluated Yamaha RX-A550 and Yamaha RX-A670 and gave them scores of 72 and 84 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.

      Yamaha RX-A550

      Yamaha RX-A670

      Amplifier
      79
      Amplifier
      83
      Audio Features
      69
      Audio Features
      84
      Video Features
      69
      Video Features
      95
      Connectivity
      80
      Connectivity
      81
      Zones
      55
      Zones
      65
      Radio
      79
      Radio
      85
      OVERALL
      72
      OVERALL
      84

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

      2. Pros and Cons

      In this section we present pros and cons of Yamaha RX-A550 and Yamaha RX-A670.

      PROS

      Yamaha RX-A550

      Yamaha RX-A670

      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   USB Input
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Spotify
      •   Dolby Atmos
      •   DTS:X
      •   DSD via HDMI
      •   Auto Speaker Calibration System with Mic.
      •   HDR10
      •   Dolby Vision
      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   USB Input
      •   Composite Video Inputs
      •   Ethernet
      •   Analog Tuner
      •   Digital Radio
      •   Spotify
      •   Tidal

      CONS

      Yamaha RX-A550

      Yamaha RX-A670

      •   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 HDR10
      •   No HDR10+
      •   No Dolby Vision
      •   No eARC
      •   No 8K Passthrough
      •   1 HDMI Outputs
      •   0 8K Input
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Zones
      •   No Digital Radio
      •   No Pandora
      •   No Tidal
      •   Bluetooth 2․1 + EDR
      •   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 8K Passthrough
      •   4 HDMI Inputs
      •   1 HDMI Outputs
      •   0 8K Input
      •   No Phono Input
      •   No RCA Pre-Outs
      •   No Zones
      •   No Pandora
      •   Bluetooth 2․1 + EDR


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

      AVERAGE

      Yamaha RX-A550

      Yamaha RX-A670

      •   6 HDMI Inputs
      •   RCA Line Inputs
      •   7.2 Channels
      •   7.1 Channel Processing
      •   RCA Line Inputs

      3. Advantage of Yamaha RX-A550

      This section shows those features and specifications which are the reason to choose Yamaha RX-A550 over Yamaha RX-A670.

      Check the Price

      Yamaha RX-A550 vs Yamaha RX-A670
      Dolby Pro Logic PLII vs
      More HDMI Inputs 6 vs 4
      More Composite Video Inputs 4 vs 3
      More Component Video Inputs 2 vs
      More Component Video Outputs 1 vs
      Analog Tuner FM/AM vs FM

      4. Advantage of Yamaha RX-A670

      This section shows those features and specifications which are the reason to choose Yamaha RX-A670 over Yamaha RX-A550.

      Check the Price

      Yamaha RX-A550 vs Yamaha RX-A670
      More Channels 5.1 vs 7.2
      Bi-amp capability vs
      More Channel Processing 5.1 vs 7.1
      Dolby Atmos vs up to 5.1.2
      Dolby Surround Upmixer vs
      DTS:X vs up to 5.1.2
      DTS Neural:X vs
      DTS Dialog Control vs
      Dialog Level Adjustment vs
      Dialog Normalization vs
      Dialogue Lift vs no presence speakers required
      YPAO Volume vs
      HDR10 vs
      BT.2020 color space vs
      Dolby Vision vs
      HLG vs
      Enhanced Audio Return Channel (eARC) vs
      Video Signal Upscaling up to 1080p vs up to 4K 60p 4:4:4
      Zone B Video Output vs
      RS-232C Interface vs
      Remote (IR) Input/Output 0 / 0 vs 0 / 0
      Party Mode vs
      Digital Radio vs DAB/DAB+
      Tidal vs
      Deezer vs
      SiriusXM vs
      More Speaker Terminals 5 vs 7
      More Large Speaker Terminals 5 vs 7
      Higher Dynamic Power per Channel, 2 Ω, Front) 160 W vs 190 W
      Higher Dynamic Power per Channel, 4 Ω, Front) 130 W vs 170 W
      Higher Dynamic Power per Channel, 6 Ω, Front) 110 W vs 140 W
      Higher Dynamic Power per Channel, 8 Ω, Front) [] vs 120 W

      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 Yamaha RX-A550 Yamaha RX-A670
        DSD via HDMI 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Auto Speaker Calibration System with Mic. YPAO sound optimization YPAO sound optimization
        New HDCP Version2.22.3
        Wi-Fi with Wireless Direct with Wireless Direct
        Bluetooth SBC, AAC
        Works with Amazon Alexa on MusicCast (Voice control using your Alexa device like Echo, Dot, Tap and Show) on MusicCast (Voice control using your Alexa device like Echo or Echo Dot)
        USB InputiPod® / iPhone®, USB memory, portable audio playerUSB memory, portable audio player
        Composite Video Inputs43
        Ethernet
        Analog Tuner FM/AM FM
        Spotify
      WEAKNESSES Yamaha RX-A550 Yamaha RX-A670
        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 Dolby Atmos Height Virtualization
        No IMAX Enhanced
        No Auro 3D with Auro-Matic Upmixer
        No HDR10+
        No 8K Passthroughup to 4K/60p 4:2:0up to 4K/60p 4:4:4
        Few HDMI Outputs11
        Few 8K Inputs
        No Phono Input
        No RCA Pre-Outs0.10.2
        No Zones11
        No Pandora
        Old Bluetooth Version2․1 + EDR2․1 + EDR

      6. Amplifier

      Yamaha RX-A550 Yamaha RX-A670

      5 channel Amplifier: Yamaha RX-A550 features 5 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).

      7 channel Amplifier: Yamaha RX-A670 features 7 channel power amplifier. It is rated at 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).



        AMPLIFIER Yamaha RX-A550 Yamaha RX-A670
        Channels5.17.2
        Power Output80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
        THX™ Certification
        Continuous 6 Ω Rated
        Bi-amp Capability

        Check the Price

        7. Speaker Configurations

        Yamaha RX-A550's and Yamaha RX-A670's amplifiers can be assigned for different speaker configurations.

        • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
        • Yamaha RX-A550: Not supported.
        • Yamaha RX-A670: 5.2.2 with internal amplifier.
        • DTS:X Configurations: The following speaker configurations are supported for DTS:X:
        • Yamaha RX-A550: Not supported.
        • Yamaha RX-A670: 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:
        • Yamaha RX-A550: 5.1 with internal amplifier.
        • Yamaha RX-A670: 5.2, 7.2 with internal amplifier.
        • Bi-Amp: Yamaha RX-A670 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

        Yamaha RX-A670 supports Dolby Atmos.

        • Dolby Surround Upmixer: Yamaha RX-A670 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

        Yamaha RX-A670 supports DTS:X.

        • DTS Neural:X: Yamaha RX-A670 features 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 Dialog Control: Yamaha RX-A670 has 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 Yamaha RX-A550 Yamaha RX-A670
        Dolby Atmos up to 5.1.2
        Dolby Atmos Height Virtualization
        Dolby Atmos Music
        Dolby TrueHD
        Dolby Digital Plus
        Dolby Surround Upmixer
        Dolby Pro Logic PLII
        Dolby Digital EX
        DTS:X up to 5.1.2
        DTS Neural:X
        DTS Virtual:X
        DTS Neo Neo:6 Neo:6
        DTS-HD Master Audio
        DTS-HD High Resolution Audio
        DTS 96/24
        DTS Express
        DTS-ES Discrete 6.1, Matrix 6.1 Discrete 6.1, Matrix 6.1
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer

        Check the Price

        9. HDMI

        Yamaha RX-A550 comes with 6 HDMI inputs. It has 1 output.

        Yamaha RX-A670 comes with 4 HDMI inputs. It has 1 output.

        • 4K/60Hz Passthrough: On both receivers all inputs pass up to 4K/60p 4:2:0 video signal.
        • 1080p Upscaling on Yamaha RX-A550: It can upscale up to 1080p from HDMI sources.
          4K Upscaling on Yamaha RX-A670: It can upscale up to 4K 60p 4:4:4 from HDMI sources.
        • BT.2020 Color Space: BT.2020 or Rec. 2020 is a color standard which delivers a wider color gamut compared to Rec. 709. It covers approximately 75% of the total visual spectrum while the Rec. 709 covers only 35% (available on Yamaha RX-A670 only).
        • HDCP 2.2 Copy Protection: Both receivers are HDCP 2.2 compliant which is a requirement for 4K/HDR copy-protected content transmission.
        • 3D Ready: Both receivers are able to pass 3D video through HDMI.

        HDR (High Dynamic Range)

        Yamaha RX-A550 does not support HDR.

        Yamaha RX-A670 supports 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)

        Yamaha RX-A670 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.



        VIDEO FEATURES Yamaha RX-A550 Yamaha RX-A670
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        HDCP Version2.22.3
        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 4:2:0up to 4K/60p 4:4:4
        Video Signal Upscaling up to 1080p up to 4K 60p 4:4:4

        Check the Price

        10. Inputs and Outputs

        Audio

        • Analog Line Inputs: There are 4 pair of line inputs on both receivers for connecting sources with analog outputs.
        • Digital Inputs: 1 optical input and 2 coaxial inputs 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:
        • Yamaha RX-A550
          Inputs:
          6   Outputs: 1
          8K Inputs: 0.
        • Yamaha RX-A670
          Inputs:
          4   Outputs: 1
          8K Inputs: 0.
        • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
        • Yamaha RX-A550
          Inputs:
          4   Outputs: 1.
        • Yamaha RX-A670
          Inputs:
          3   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.
        • Yamaha RX-A550 supports up to 1080i resolution on Component video connectors. resolution on Component video connectors.
        • Yamaha RX-A550
          Inputs:
          2   Outputs: 1.
        • Yamaha RX-A670
          Inputs:
          0   Outputs: 0.

        Front A/V Inputs

        • Yamaha RX-A550: USB, mini-jack
        • Yamaha RX-A670: USB, mini-jack Audio

        Yamaha RX-A550

        Image cannot be found Image cannot be found

        Yamaha RX-A670

        Image cannot be found Image cannot be found
        TERMINALS Yamaha RX-A550 Yamaha RX-A670
        HDMI Inputs64
        HDMI Outputs11
        8K Inputs
        USB InputiPod® / iPhone®, USB memory, portable audio playerUSB memory, portable audio player
        USB DC Out Port
        Optical Inputs11
        Optical Outputs
        Coaxial Inputs22
        RCA Line Inputs4 (1 AUX Jack in the front)4 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs0.10.2
        XLR Pre-outs
        Composite Video Inputs43
        Composite Video Outputs11
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs1

        Check the Price

        11. Evaluations

        We evaluated Yamaha RX-A550 and Yamaha RX-A670 and gave them scores of 72 and 84 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.


        Yamaha RX-A550

        Yamaha RX-A670

        OVERALL
        72
        OVERALL
        84

        Amplifier

        GOOD
        79
        •   Few Channels - 5.1
        •   Low Power Output - 80 W
        GOOD
        83
        •   7.2 Channels
        •   Low Power Output - 80 W

        Audio Features

        AVERAGE
        69
        •   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
        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

        Video Features

        AVERAGE
        69
        •   No HDR10
        •   No HDR10+
        •   No Dolby Vision
        •   No 8K Passthrough
        EXCELLENT
        95
        •   HDR10
        •   No HDR10+
        •   Dolby Vision
        •   No 8K Passthrough

        Connectivity

        GOOD
        80
        •   No eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Works with Amazon Alexa
        •   6 HDMI Inputs
        •   1 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   RCA Line Inputs
        •   No Phono Input
        •   No RCA Pre-Outs
        •   Composite Video Inputs
        •   Component Video Inputs
        •   Ethernet
        •   Bluetooth 2․1 + EDR
        GOOD
        81
        •   eARC
        •   New HDCP Version
        •   Wi-Fi
        •   Bluetooth
        •   Works with Amazon Alexa
        •   4 HDMI Inputs
        •   1 HDMI Outputs
        •   0 8K Input
        •   USB Input
        •   RCA Line Inputs
        •   No Phono Input
        •   No RCA Pre-Outs
        •   Composite Video Inputs
        •   Ethernet
        •   Bluetooth 2․1 + EDR

        Zones

        AVERAGE
        55
        •   No Zones
        AVERAGE
        65
        •   No Zones

        Radio

        GOOD
        79
        •   Analog Tuner
        •   No Pandora
        •   Spotify
        •   No Tidal
        EXCELLENT
        85
        •   Analog Tuner
        •   No Pandora
        •   Spotify
        •   Tidal

        12. Specifications

        GENERAL Yamaha RX-A550 Yamaha RX-A670
        BrandYamahaYamaha
        SeriesAventageAventage
        ModelRX-A550RX-A670
        TypeA/V ReceiverA/V Receiver
        CountryAustraliaAustralia
        Release Year20152017
        PredecessorYamaha RX-A660
        SuccessorYamaha RX-A660 Yamaha RX-A680
        AMPLIFIER Yamaha RX-A550 Yamaha RX-A670
        Channels5.17.2
        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
        THX™ Certification
        Continuous 6 Ω Rated
        Certified 4 Ω Performance
        Discrete Output Stage Circuitry
        Bi-amp Capability
        AUDIO FEATURES Yamaha RX-A550 Yamaha RX-A670
        Surround:AI™
        DACBurr-BrownBurr-Brown
        DAC Specs192 kHz/24 Bit192 kHz/24 Bit
        Maximum Channel Processing5.17.1
        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 PLII
        Dolby Digital EX
        Surround EX
        DTS:X up to 5.1.2
        DTS Neural:X
        DTS Virtual:X
        DTS Neo Neo:6 Neo:6
        DTS-HD Master Audio
        DTS-HD High Resolution Audio
        DTS 96/24
        DTS Express
        DTS-ES Discrete 6.1, Matrix 6.1 Discrete 6.1, Matrix 6.1
        IMAX Enhanced
        Auro 3D with Auro-Matic Upmixer
        PCM 2-ch/Multi-ch Input 2-ch/Multi-ch Input
        Network Audio FormatsMP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSDMP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
        Music Playback via USBMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSDMP3, WMA, AAC, Apple Lossless, WAV, FLAC, AIFF, DSD
        High Resolution Music Playback via USB and/or Network up to 192 kHz up to 192 kHz
        High Resolution Audio Formats via USBApple Lossless, WAV, FLAC, AIFF, DSDApple Lossless, WAV, FLAC, AIFF, DSD
        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
        DTS Dialogue Control
        Dialog Level Adjustment
        Dialog normalization
        Dialogue Lift no presence speakers required
        Compressed Music Enhancer including for Bluetooth® including enhancer for Bluetooth®
        High-resolution Music Enhancer
        Adaptive DRC (Dynamic Range Control)
        Initial Volume & Maximum Volume Setting
        Audyssey Dynamic EQ
        Audyssey Dynamic Volume
        Audyssey LFC
        Audyssey Sub EQ HT
        Audyssey DSX
        Direct Mode
        Straight Decoding Mode
        CINEMA DSP 3D 3D
        DSP Programs1717
        SILENT CINEMA / Virtual CINEMA DSP Virtual CINEMA FRONT Virtual CINEMA FRONT
        Virtual Speakers including surround back
        Independent Subwoofer Outputs
        CALIBRATION Yamaha RX-A550 Yamaha RX-A670
        Auto Speaker Calibration System with Mic. YPAO sound optimization YPAO sound optimization
        YPAO Volume
        PEQ for SUBDown to 31 HzDown to 31 Hz
        VIDEO FEATURES Yamaha RX-A550 Yamaha RX-A670
        HDR10
        HDR10+
        Dynamic HDR
        BT.2020 color space
        Dolby Vision
        HLG (Hybrid Log Gamma)
        HDBaseT Compatible
        Enhanced Audio Return Channel (eARC)
        HDCP Version2.22.3
        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 4:2:0up to 4K/60p 4:4:4
        Video Signal Upscaling up to 1080p up to 4K 60p 4:4:4
        Analog To HDMI Upconversion
        Component Video Upscaling
        Analog to Analog Video conversion
        Component Video Maximum Resolution1080i
        Video Parameter Adjustments
        isf Certified Calibration Control
        CONNECTIVITY Yamaha RX-A550 Yamaha RX-A670
        Wi-Fi with Wireless Direct with Wireless Direct
        Bluetooth SBC, AAC
        Works with Amazon Alexa on MusicCast (Voice control using your Alexa device like Echo, Dot, Tap and Show) on MusicCast (Voice control using your Alexa device like Echo or Echo Dot)
        Chromecast Built-In
        Works with SonoS
        DTS Play-Fi
        MHL Input
        DLNA 1.5
        MusicCast
        AirPlay AirPlay AirPlay
        Apple Product Connection iPod, iPhone and iPad iPod, iPhone and iPad
        Remote App (iPhone® / iPad® / Android™ phone / tablet) (iPhone® / iPad® / Android™ phone / tablet)
        InstaPrevue Input Source Prevue
        TERMINALS Yamaha RX-A550 Yamaha RX-A670
        HDMI Inputs64
        HDMI Outputs11
        8K Inputs
        USB InputiPod® / iPhone®, USB memory, portable audio playerUSB memory, portable audio player
        USB DC Out Port
        Optical Inputs11
        Optical Outputs
        Coaxial Inputs22
        RCA Line Inputs4 (1 AUX Jack in the front)4 (1 front)
        RCA Line Outputs
        XLR Line Inputs
        Phono Input
        Multi-Channel Input
        RCA Pre-Outs0.10.2
        XLR Pre-outs
        Composite Video Inputs43
        Composite Video Outputs11
        S-Video Inputs
        S-Video Outputs
        Component Video Inputs2
        Component Video Outputs1
        Ethernet
        Ethernet Switch
        PC In
        Front A/V InputsUSB, mini-jackUSB, mini-jack Audio
        Speaker A/B
        Headphone Out6.3 mm (1/4")6.3 mm (1/4")
        Detachable Power Cord
        dockport
        ZONES Yamaha RX-A550 Yamaha RX-A670
        Number of Zones11
        Zone B Video Output
        Zone GUI
        RS-232C Interface
        +12V Trigger Output
        Remote (IR) Input/Output0 / 00 / 0
        Party Mode
        MISCELLANEOUS Yamaha RX-A550 Yamaha RX-A670
        On-Screen Display color OSD color OSD
        SCENESCENE (4 sets)SCENE (4 sets)
        Web Control
        PreAmp Mode
        RADIO Yamaha RX-A550 Yamaha RX-A670
        Analog Tuner FM/AM FM
        Presets4040
        Digital Radio DAB/DAB+
        Internet Radio vTuner
        Pandora
        Spotify
        Tidal
        Deezer
        Napster
        SiriusXM
        CONSTRUCTION Yamaha RX-A550 Yamaha RX-A670
        A.R.T. Wedge
        Speaker Terminals57
        Large Speaker Terminals57
        Color-Coded Speaker Terminals
        Gold plated RCA terminals
        POWER Yamaha RX-A550 Yamaha RX-A670
        Power SupplyAC 240 V, 50 HzAC 240 V, 50 Hz
        Power Consumption260 W260 W
        Standby Power0.1 W0.1 W
        ECO Mode / Hybrid Standby Function
        Auto Power Standby
        PHYSICAL Yamaha RX-A550 Yamaha RX-A670
        Dimensions (W x H x D)435 mm x 161 mm x 327 mm (with antenna: 435 mm x 221 mm x 327 mm)
        17-1/8" x 6-3/8" x 12-7/8" (with antenna up: 17-1/8" x 8-3/4" x 12-7/8")
        435 mm x 161 mm x 330 mm (with antenna: 435 mm x 225.5 mm x 330 mm)
        Weight8.1 kg (17.9 lbs)8.3 kg (18.3 lbs)
        SPECIFICATIONS Yamaha RX-A550 Yamaha RX-A670
        Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.09% THD)
        Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)95 W (0.9% THD)
        Power Output (6 Ω, 20 Hz - 20 kHz, 2 channel driven)80 W (0.09% THD)
        Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)115 W (0.9% THD)115 W (0.9% THD)
        Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)135 W (10% THD)135 W (10% THD)
        Dynamic Power per Channel (2 Ω, Front)160 W190 W
        Dynamic Power per Channel (4 Ω, Front)130 W170 W
        Dynamic Power per Channel (6 Ω, Front)110 W140 W
        Dynamic Power per Channel (8 Ω, Front)120 W
        Damping Factor100 (Front, 20 Hz - 20 kHz, 8 Ω)100 (Front, 20 Hz - 20 kHz, 8 Ω)
        Input Sensitivity and Impedance (Line)200 mV/47 kΩ (1 kHz, 100 W/6 Ω)200 mV/47 kΩ (1 kHz, 100 W/6 Ω)
        Maximum Input Sensitivity (Line)2.3 V2.3 V (1 kHz, 0.5% THD)
        Rated Headphone Jack Output Level and Impedance100 mV/560 Ω (AV 4 etc., 1 kHz, 50 mV, 8 Ω)100 mV/470 Ω (1 kHz, 50 mV, 8 Ω)
        S/N Ratio (Line, IHF-A)110 dB110 dB
        Frequency Response (Analog In)+0/-3 dB (10 Hz to 100 kHz)+0/-3 dB (10 Hz to 100 kHz)
        Residual noise (IHF-A Network)150 µV (Speaker Out)150 µV (Speaker Out)
        Channel Separation at 1 kHz/10 kHz (LINE)75 dB/50 dB75 dB/50 dB
        DSD Sampling Rates via HDMI2.8 MHz2.8 MHz
        DSD Sampling Rates via USB5.6 MHz, 2.8 MHz5.6 MHz, 2.8 MHz
        Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
        0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
        1 Vp-p/75 Ω (Composite)
        1 Vp-p/75 Ω (Composite)
        Video Maximum Input1.5 Vp-p1.5 Vp-p
        Video Frequency Response5 Hz to 60 MHz, -3 dB (Component)
        Video S/N Ratio50 dB50 dB
        Ethernet Standard10BASE-T/100BASE-TX10BASE-T/100BASE-TX
        Wi-Fi StandardIEEE 802.11 b/g/nIEEE 802.11 b/g/n
        Wi-Fi Terminal Frequency2.4 GHz2.4 GHz
        Bluetooth Version2․1 + EDR2․1 + EDR
        Bluetooth Frequency2.4 GHz
        USB TerminalUSB2.0 5 V, 1 AUSB2.0 5 V, 1 A
        FM Frequency87.50 MHz - 108.00 MHz87.50 MHz - 108.00 MHz
        FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)Mono: 3 µV (20.8 dBf)Mono: 3 µV (20.8 dBf)
        FM S/N RatioMono/Stereo: 65 dB/64 dBMono/Stereo: 65 dB/64 dB
        FM Harmonic Distortion (IHF, 1 kHz)Mono/Stereo: 0.5%/0.6%Mono/Stereo: 0.5%/0.6%
        AM Frequency531 MHz - 1611 MHz
        DAB Freq174 MHz - 240 MHz (Band III)
        DAB audio formatsMPEG 1 Layer II/MPEG-4 HE-AAC v2
        Warranty3 Years3 Years

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

        Discussion

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