Yamaha Aventage RX-A870

    89
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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, Dolby Vision
    • 4K/60Hz Passthrough, 4K/60Hz Upscaling
    • Wi-Fi, Bluetooth, Ethernet
    • Phono Input
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    Disclosure: We earn money from the affiliate links to products associated with content in this article.

    Overview

    Yamaha Aventage RX-A870 was introduced in 2017. 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 and upscales up to 4K 60p 4:4:4 video signal.

    We evaluated the a/v receiver and gave 89 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

    Amplifier
    89
    Audio Features
    84
    Video Features
    95
    Connectivity
    87
    Zones
    82
    Radio
    97
    OVERALL
    89

    For more details about the ranking please scroll down to an    Evaluation section.


    Here is a history of the series, where you can view and compare the main specifications of the receivers.

    Evolution of the series
    Model Year Chann. Power Dolby Atmos DTS:X HDR10 HDR10+ Dolby Vision Pass. Price
    RX-A2A Image cannot be found 2020 7.2 100 W 8K
    RX-A880 Image cannot be found 2018 7.2 100 W 4K
    RX-A870 Image cannot be found 2017 7.2 100 W 4K
    RX-A860 Image cannot be found 2016 7.2 100 W 4K
    RX-A850 Image cannot be found 2015 7.2 100 W 4K
    RX-A840 Image cannot be found 2014 7.2 100 W 4K
    RX-A830 Image cannot be found 2013 7.2 100 W 4K
    RX-A820 Image cannot be found 2012 7.2 100 W 4K
    RX-A810 Image cannot be found 2011 7.2 100 W 1080p
    RX-A800 Image cannot be found 2010 7.2 95 W 1080p

    You can view their side-by-side comparison here: Yamaha RX-A2A vs RX-A880 vs RX-A870 vs RX-A860 vs RX-A850 vs RX-A840.

    Pros and Cons

    In this section we present pros and cons of Yamaha Aventage RX-A870.

    PROs

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

    CONs

    •   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
    •   0 8K Input
    •   No Digital Radio
    •   Bluetooth 2․1 + EDR

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

    AVERAGE

    •   7.2 Channels
    •   Power Output - 100 W
    •   7.1 Channel Processing
    •   2 HDMI Outputs
    •   RCA Line Inputs
    •   2 Zones

    Yamaha 2017 Lineup

    In 2017 Yamaha released 13 new receivers. Here is the lineup:

    Yamaha 2017 Lineup
    ModelChannelsPowerMax. Ch. Proc.Pre OutsRoom Corr.Immersive AudioZones Price
    RX-A3070 Image cannot be found 9.2150 W11.211.2 YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    4
    RX-A2070 Image cannot be found 9.2140 W9.27.2-ch YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    4
    RX-A1070 Image cannot be found 7.2110 W7.17.2 YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    2
    RX-A870 Image cannot be found 7.2100 W7.17.2 YPAO sound optimization (R.S.C. with Multipoint measurement)Dolby Atmos
    DTS:X
    2
    RX-A770 Image cannot be found 7.295 W7.1 YPAO sound optimization (R.S.C.)Dolby Atmos
    DTS:X
    2
    RX-A670 Image cannot be found 7.280 W7.1 YPAO sound optimizationDolby Atmos
    DTS:X
    1
    RX-V3083 Image cannot be found 9.2150 W11.211.2 YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    4
    RX-V2083 Image cannot be found 9.2140 W9.27.2 YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    4
    RX-V1083 Image cannot be found 7.2110 W7.17.2 YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation and Angle measurementDolby Atmos
    DTS:X
    2
    RX-V683 Image cannot be found 7.290 W7.1 YPAO sound optimization (R.S.C.)Dolby Atmos
    DTS:X
    2
    RX-V583 Image cannot be found 7.280 W7.1 YPAO sound optimizationDolby Atmos
    DTS:X
    1
    RX-V483 Image cannot be found 5.180 W5.1 YPAO sound optimization1
    RX-V383 Image cannot be found 5.170 W5.1 YPAO sound optimization1

    You can view their side-by-side comparison here: Yamaha RX-A3070 vs RX-A2070 vs RX-A1070 vs RX-A870 vs RX-A770 vs RX-A670.

    Predecessor

    Here we are comparing Yamaha Aventage RX-A870 to its predecessor RX-A860 and displaying the major changes.

    UPGRADES Yamaha Aventage RX-A870 vs Yamaha RX-A860
    Enhanced Audio Return Channel (eARC) vs
    Zone 2 Outs RCA Preout vs Line output
    Tidal vs
    Deezer vs
    DOWNGRADES Yamaha Aventage RX-A870 vs Yamaha RX-A860
    Dolby Pro Logic vs PLIIx
    Dolby Digital EX vs
    Component Video Maximum Resolution 480i/576i vs 1080i
    Less RCA Line Inputs 4 (1 front) vs 5 (1 front)
    Less Composite Video Inputs 1 vs 5 (1 front)
    Less Composite Video Outputs vs 1
    Less Component Video Inputs 1 vs 2
    Less Component Video Outputs vs 1
    Front A/V Inputs HDMI, USB, mini-jack Audio vs HDMI, USB, Analog Audio, Composite Video

    For more detailed comparison between the models please visit Yamaha Aventage RX-A870 vs RX-A860.

    Successor

    In 2018 Yamaha Aventage RX-A870 was replaced by Yamaha RX-A880. Let us now have a look at some important differences between Yamaha Aventage RX-A870 and its successor.

    UPGRADES Yamaha RX-A880 vs Yamaha Aventage RX-A870
    Higher DAC Specs 384 kHz/32 Bit vs 192 kHz/24 Bit
    Higher Resolution Music Playback via USB up to 192 kHz/32 Bit vs up to 192 kHz
    Newer HDCP Version 2.3 vs 2.3
    AirPlay AirPlay 2 via firmware update vs AirPlay
    More Scenes SCENE (8 sets) vs SCENE (4 sets)
    Higher S/N Ratio (Phono MM, IHF-A) 96 dB vs 95 dB
    Higher DSD Sampling Rate via USB 11.2 MHz, 5.6 MHz, 2.8 MHz vs 5.6 MHz, 2.8 MHz
    Wi-Fi Standard IEEE 802.11 a/b/g/n/ac vs IEEE 802.11 b/g/n
    Wi-Fi Terminal Frequency 2.4 GHz, 5 GHz vs 2.4 GHz
    Newer Bluetooth Version 4․2 vs 2․1 + EDR
    DOWNGRADES Yamaha RX-A880 vs Yamaha Aventage RX-A870
    Less HDMI Inputs 7 vs 8 (1 front)
    Front A/V Inputs USB, mini-jack Audio vs HDMI, USB, mini-jack Audio
    Worse Channel Separation at 1 kHz/10 kHz (LINE) 70 dB/50 dB vs 75 dB/50 dB

    For more detailed comparison between the models please visit Yamaha Aventage RX-A870 vs RX-A880.

    Audio Section

    7 channel Amplifier

    Yamaha Aventage RX-A870 features 7 channel power amplifier. It is rated at 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.

      AMPLIFIER
      Channels7.2
      Power Output100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
      Front Wide Channel Support
      THX™ Certification
      Continuous 6 Ω Rated
      Certified 4 Ω Performance
      Bi-amp Capability

      Speaker Configurations

      Yamaha Aventage RX-A870's 7 channel amplifier can be assigned for different speaker configurations.

      • Dolby Atmos Configurations: The following speaker configurations are supported for Dolby Atmos:
      • 5.2.2 with internal amplifier.
      • DTS:X Configurations: 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:
      • 5.2, 7.2 with internal amplifier.
      • 2-ch Bi-Amp: Yamaha Aventage RX-A870 allows you 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.
      Yamaha Aventage RX-A870

      Dolby Atmos

      Yamaha Aventage RX-A870 supports Dolby Atmos. It is a cinematic audio format in which sounds exist as individual entities, called audio objects. In Dolby Atmos, any sound can exist as an independent audio object, free of channel restrictions. They can be precisely placed and moved anywhere in your room, including overhead, to flow above and around you in three-dimensional space. Through the use of audio objects, overhead sound, and all the richness, clarity, and power of Dolby sound, Dolby Atmos turns your room into an amazing place for entertainment. The format supports up to 128 simultaneous independent audio objects in a mix for rich, realistic, and breathtaking sound. It recreates the director's original concept through descriptive metadata to provide customized playback for home theater and delivers sounds above you through overhead speakers, special upward-firing Dolby Atmos speakers, or a Dolby Atmos enabled sound bar.

      • 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 Aventage RX-A870 supports DTS:X. A technique used in DTS:X is similar to the one used in Dolby Atmos. Instead of a fixed number of channels, DTS:X defines object locations from the listener in polar coordinates. An a/v receiver then dynamically renders sound according to the current speaker configuration. The speaker layout employed by DTS:X is the sum of Dolby Atmos and Auro-3D. It has standard 7.1 channel base layer, a 5 channel height layer above the base layer on the front and side walls, and 3 rows of speakers on the ceiling.

      • DTS Neural:X: DTS Neural:X 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: 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.
      DECODING
      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
      DTS Virtual:X
      DTS Neo Neo:6
      DTS-HD Master Audio
      DTS-HD High Resolution Audio
      DTS 96/24
      DTS Express
      DTS-ES Discrete 6.1, Matrix 6.1
      IMAX Enhanced
      Auro 3D with Auro-Matic Upmixer

      Enhanced Audio Return Channel (eARC)

      Audio Return Channel (ARC) feature 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.


      Sound Processing

      • Adaptive DRC: Yamaha Aventage RX-A870 features Adaptive DRC (Dynamic Range Control) which automatically adjusts the dynamic range of the sound according to the volume level. This ensures that you hear clear dialog and vocals, and all sound effects at comfortable levels. There is no need to adjust the volume level as you listen; everything from whispers to big explosions will be heard clearly and comfortably at the same volume setting. It also tones down loud TV commercials, and is ideal for low-volume, late-night listening, when you do not want to disturb others.

      Room Calibration

      Yamaha Aventage RX-A870 comes with YPAO (R.S.C. with Multipoint measurement) room correction system and includes the calibration microphone.

      • YPAO: The Yamaha Parametric room Acoustic Optimizer (YPAO) function detects speaker connections, measures the distances from them to your listening position(s), and then automatically optimizes the speaker settings, such as volume balance and acoustic parameters, to suit your room.

      Video Section

      HDMI

      Yamaha Aventage RX-A870 features 8 HDMI inputs. It has 2 outputs which work parallelly and output the same signal.

      • 4K/60Hz Passthrough: All inputs pass up to 4K/60p 4:4:4 video signal.
      • 4K Upscaling: Yamaha Aventage RX-A870 can upscale up to 4K 60p 4:4:4 from HDMI and analog sources.
      • Analog To HDMI Upconversion: The a/v receiver supports video upconversion, so you can connect your analog Component and Composite video sources and Yamaha Aventage RX-A870 will output them 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%.
      • HDCP 2.3 Copy Protection: All inputs and outputs are HDCP 2.3 compliant which is a requirement for 4K/HDR copy-protected content transmission.
      • 3D Ready: Yamaha Aventage RX-A870 is able to pass 3D video through HDMI.

      HDR (High Dynamic Range)

      Yamaha Aventage RX-A870 supports HDR (high dynamic range) video formats such as 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.

      • HDR10: HDR10 uses the wide-gamut Rec. 2020 color space. It sends static metadata via video stream to the TV which calibrates its screen brightness and color according to that. HDR10 supports 10-bit color which corresponds to 1024 shades of the primary RGB colors. It is technically limited to a maximum of 10,000 nits peak brightness, however common HDR10 contents are mastered with peak brightness from 1,000 to 4,000 nits.
      • Dolby Vision: Dolby Vision is a set of technologies developed by Dolby Laboratories for high dynamic range (HDR) video. It covers content creation, distribution, and playback. Like HDR10+, it includes dynamic metadata that are used to adjust and optimize each frame of the HDR video to the consumer display's capabilities in a way specified by the content creator. Dolby Vision allows for a maximum resolution of 8K up to 12-bit color depth, maximum peak brightness of 10,000 nits and a color gamut up to Rec. 2020. It uses Dolby's proprietary dynamic metadata defined in SMPTE ST 2094-10.
      • Hybrid Log-Gamma (HLG): The Hybrid Log-Gamma (HLG) is a transfer function developed mainly for HDR live video feed and over-the-air broadcasts. It is an HDR format that uses BT.2020 color primaries and a bitdepth of 10-bit. It is backward compatible with the transfer function of SDR and is designed to be better-suited for television broadcasting, where the metadata required for other HDR formats is not backward compatible with non-HDR displays. HLG defines a non-linear optical-electro transfer function, in which the lower half of the signal values use a gamma curve and the upper half of the signal values use a logarithmic curve.
      Yamaha Aventage RX-A870
      VIDEO FEATURES
      HDR10
      HDR10+
      Dynamic HDR
      BT.2020 color space
      Dolby Vision
      HLG (Hybrid Log Gamma)
      HDBaseT Compatible
      Enhanced Audio Return Channel (eARC)
      HDCP Version2.3
      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 4:4:4
      Video Signal Upscaling up to 4K 60p 4:4:4

      Multi-zone Playback

      Yamaha Aventage RX-A870 offers multi-zone playback which allows you to play different input sources in 2 different rooms.


      Zone 2

      • Powered Zone 2: You can use the unit's 2 amplifier channels by connecting Zone 2 speakers directly to the speaker terminals. The remaining 5 channels will be left for main zone amplification.

      Zone B

      • HDMI Output: Yamaha Aventage RX-A870 offers HDMI output for Zone B. This means that it can send two different HDMI signals to two displays.
      ZONES
      Number of Zones2
      Powered ZonesZone 2
      Zone 2 OutsRCA Preout
      Zone B Video Output HDMI
      Zone GUI
      RS-232C Interface
      +12V Trigger Output1
      Remote (IR) Input/Output1 / 1
      Party Mode
      >

      Inputs and Outputs

      Audio

      • Phono Input: There is an MM phono input with built-in phono stage for connecting the moving magnet cartridge output of the turntable directly to the a/v receiver.
      • Analog Pre-Outs: Yamaha Aventage RX-A870 has 7.2 preamplifier outputs which allow you to connect the a/v receiver to the external power amplifier. You may want to use a high quality external amplifier for certain channels, usually for front L/R and center, and use the a/v receiver to power the rest.
      • Analog Line Inputs: There are 4 line inputs for analog audio connection.
      • Digital Inputs: 2 optical inputs and 2 coaxial inputs are available for digital audio connection.
      • Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.

      Video

      • HDMI:
      • Inputs: 8 (1 front)   Outputs: 2
        8K Inputs: 0
      • Composite Video: Connect you VCR, Laserdisc player and other old video equipment with composite video cables.
      • Inputs: 1   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. Yamaha Aventage RX-A870 supports up to 480i/576i resolution on Component video connectors.
      • Inputs: 1   Outputs: 0

      Front A/V Inputs

      • HDMI, USB, mini-jack Audio
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      TERMINALS
      HDMI Inputs8 (1 front)
      HDMI Outputs2
      8K Inputs
      USB InputUSB memory, portable audio player
      USB DC Out Port
      Optical Inputs2
      Optical Outputs
      Coaxial Inputs2
      RCA Line Inputs4 (1 front)
      RCA Line Outputs
      XLR Line Inputs
      Phono Input
      Multi-Channel Input
      RCA Pre-Outs7.2
      XLR Pre-outs
      Composite Video Inputs1
      Composite Video Outputs
      S-Video Inputs
      S-Video Outputs
      Component Video Inputs1
      Component Video Outputs

      Yamaha Aventage RX-A870 Evaluation

      We evaluate Yamaha Aventage RX-A870 and give score of 89 out of 100. We also give separate scores for 6 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.


      OVERALL
      89

      Amplifier

      EXCELLENT
      89

      We give Yamaha Aventage RX-A870 a score of 89 for Amplifier features.

      •   7.2 Channels
      •   Power Output - 100 W

      Audio Features

      GOOD
      84

      We give Yamaha Aventage RX-A870 a score of 84 for Audio Features features.

      •   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

      EXCELLENT
      95

      We give Yamaha Aventage RX-A870 a score of 95 for Video Features features.

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

      Connectivity

      EXCELLENT
      87

      We give Yamaha Aventage RX-A870 a score of 87 for Connectivity features.

      •   eARC
      •   New HDCP Version
      •   Wi-Fi
      •   Bluetooth
      •   Works with Amazon Alexa
      •   8 HDMI Inputs
      •   2 HDMI Outputs
      •   0 8K Input
      •   USB Input
      •   RCA Line Inputs
      •   Phono Input
      •   RCA Pre-Outs
      •   Composite Video Inputs
      •   Component Video Inputs
      •   Ethernet
      •   Bluetooth 2․1 + EDR

      Zones

      GOOD
      82

      We give Yamaha Aventage RX-A870 a score of 82 for Zones features.

      •   2 Zones

      Radio

      EXCELLENT
      97

      We give Yamaha Aventage RX-A870 a score of 97 for Radio features.

      •   Analog Tuner
      •   Pandora
      •   Spotify
      •   Tidal


      For a full specification list please go to the specifications page:

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