Yamaha Aventage RX-A4A (USA version)
- 7.2 channels
- 7.1 channel processing
- 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
- HDMI 2.1
- Dolby Atmos, DTS:X capable
- HDR10, HDR10+, Dolby Vision, 4K Upscaling, 8K Passthrough
- AirPlay 2, MusicCast
- Ethernet, Wi-Fi, Bluetooth
- USB and Phono inputs
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Yamaha Aventage RX-A4A was introduced in 2021. It is equipped with 7 channel amplifier with 110 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 up to 4K 60p 4:4:4 video signal.
We evaluated the a/v receiver and gave 90 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.
Pros and Cons
In this section we present pros and cons of Yamaha Aventage RX-A4A.
|Dolby Atmos Height Virtualization|
|DSD via HDMI|
|Auto Speaker Calibration System with Mic.|
|New HDCP Version|
|Auto Low Latency Mode Pass-through|
|4K or 8K Video Passthrough|
|4K or 8K Signal Upscaling|
|Works with Amazon Alexa|
|Many HDMI Inputs|
|Many HDMI Outputs|
|Many 8K Inputs|
|New Bluetooth Version|
|No Front Wide Channel Support|
|No IMAX Enhanced|
|No Auro 3D with Auro-Matic Upmixer|
|No Chromecast Built-In|
|Few Analog Audio Line Inputs|
|No Composite Video Inputs|
Here we are comparing Yamaha Aventage RX-A4A to its predecessor RX-A1070 and displaying the major changes.
|UPGRADES||Yamaha Aventage RX-A4A||vs||Yamaha Aventage RX-A1070|
|Higher DAC Specs||384 kHz/32 Bit||vs||192 kHz/24 Bit|
|Dolby Atmos Height Virtualization||vs|
|Higher Resolution Music Playback via USB||up to 384 kHz/32 Bit||vs||up to 192 kHz|
|Independent Subwoofer Outputs||vs|
|Auto Low Latency Mode Pass-through||vs|
|Video Signal Passthrough||up to 8K 50/60Hz and 4K 100/120Hz 4:4:4||vs||up to 4K 60p 4:4:4|
|More HDMI Outputs||3 (2 for MAIN, 1 for ZONE2)||vs||2 (1 for MAIN, 1 for Sub/Zone2)|
|More 8K Inputs||7||vs|
|Better Channel Separation at 1 kHz/10 kHz (LINE)||75 dB/61 dB||vs||75 dB/60 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 Aventage RX-A4A||vs||Yamaha Aventage RX-A1070|
|Analog To HDMI Upconversion||vs||Component****, Composite|
|Less HDMI Inputs||7||vs||8 (1 front)|
|Less Analog Audio Line Inputs||3||vs||8 (1 front)|
|Less Optical Inputs||2||vs||3|
|Less Coaxial Inputs/Outputs||1||vs||3|
|Less Composite Video Inputs||vs||4|
|Less Component Video Inputs||vs||2|
|Front A/V Inputs||USB||vs||HDMI, USB, Analog Audio|
|Zone 2 Outs||RCA Preout||vs||HDMI, RCA Preout|
|Zone B Video Output||vs||HDMI|
|Less Scenes||SCENE (8 sets)||vs||SCENE PLUS (12 sets)|
|Smaller Power Supply||410 W||vs||450 W|
|Higher THD||0.05% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω)||vs||0.04% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω)|
|Lower Damping Factor||120 (Front, 1 kHz, 8 Ω)||vs||150 (Front, 1 kHz, 8 Ω)|
For more detailed comparison between the models please visit Yamaha Aventage RX-A4A vs Yamaha Aventage RX-A1070.
7 channel Amplifier
Yamaha Aventage RX-A4A features 7 channel power amplifier. It is rated at 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and is able to drive 4 ohm speakers.
Yamaha Aventage RX-A4A'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.
- Bi-Amp: You can bi-amp front left and right speakers. 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-A4A 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.
- Dolby Atmos Height Virtualization: Dolby Atmos height virtualization 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.
Yamaha Aventage RX-A4A 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.
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.
- Surround:AI: Yamaha Aventage RX-A4A features Surround:AI artificial intelligence which in real time, automatically optimizes surround-sound performance for each scene in a movie or any piece of content. Surround:AI analyzes a scene's audio characteristics, focusing on soundtrack elements such as dynamic range, amount of dialog, the degree of sound effects, background music, and channel balance. Surround:AI then compares the scene's audio characteristics to a reference database of movie scenes and automatically processes the scene's sound to optimize performance. Surround:AI makes dialog more intelligible in scenes with lots of background noise, delivers massive, full-bodied sound for scenes with immersive sound effects, and ensures that you hear softly spoken dialog and soft background sounds. Scenes with big musical scores deliver the best possible musical experience.
- Adaptive DRC: Yamaha Aventage RX-A4A 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.
Yamaha Aventage RX-A4A comes with YPAO with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation, Low Frequency mode and Angle 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.
Yamaha Aventage RX-A4A features 7 HDMI 2.1 inputs with 8K support. It has 3 outputs: 2 for MAIN and 1 for ZONE2.
- 8K/60Hz and 4K/120Hz Passthrough: All inputs pass up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 video signal.
- 4K Upscaling: Yamaha Aventage RX-A4A 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%.
- 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.
- 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.
- 3D Ready: Yamaha Aventage RX-A4A is able to pass 3D video through HDMI.
HDR (High Dynamic Range)
Yamaha Aventage RX-A4A supports HDR (high dynamic range) video formats such as 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.
- 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.
- HDR10+: HDR10+ is an HDR video technology that adds dynamic metadata to HDR10 source files. The dynamic metadata are used to adjust brightness levels on a scene-by-scene or even frame-by-frame basis. HDR10+ supports maximum of 10,000 nits peak brightness and 10-bit or more (up to 16-bit) color bit depth. It uses Samsung's dynamic metadata defined in SMPTE ST 2094-40.
- 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-A4A supports Auto Low Latency Mode (ALLM), Variable Refresh Rate (VRR) and Quick Frame Transport (QFT) for lag-free and smooth gaming.
- Auto Low Latency Mode (ALLM): Auto Low Latency Mode enables the ideal latency setting to automatically be set allowing for smooth, lag-free and uninterrupted viewing and interactivity. When the receiver detects a gaming signal it will enter ALLM. The signal will also be sent to the TV causing it to automatically switch to a low-latency, low-lag mode for gaming. Some functions will not be available on the receiver and TV during ALLM.
- Variable Refresh Rate (VRR): VRR enables a gaming source such as a console or computer to deliver video frames as fast as it can, which in many cases is slower than the normal static refresh rate. It allows the TV to adapt to certain frame rate which reduces or eliminates lag, judder and frame tearing for more fluid and better detailed gameplay.
- Quick Frame Transport (QFT): QFT reduces latency for smoother no-lag gaming, and real-time interactive virtual reality. It transports each frame at a higher rate to decrease display latency, which is the amount of time between a frame being ready for transport in the GPU and that frame being completely displayed.
Yamaha Aventage RX-A4A offers multi-zone playback which allows you to play different input sources in 2 different rooms.
- 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.
Inputs and Outputs
- 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-A4A 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 3 line inputs for analog audio connection.
- Digital Inputs: 2 optical inputs and 1 coaxial input are available for digital audio connection.
- Headphone Output: There is a 6.3 mm (1/4") headphone output jack on the front panel.
- Inputs: 7 Outputs: 3 (2 for MAIN, 1 for ZONE2)
8K Inputs: 7
Here we list all the available features and specifications of Yamaha Aventage RX-A4A.
|Front Wide Channel Support|
|Continuous 6 Ω Rated|
|Certified 4 Ω Performance|
|DAC||ESS Hyperstream DAC ES9007S|
|DAC Specs||384 kHz/32 Bit|
|Maximum Channel Processing||7.1|
|Air Studios Monitor Certification|
|Dolby Atmos Height Virtualization|
|Dolby Atmos Music|
|Dolby Digital Plus|
|Dolby Surround Upmixer|
|Dolby Pro Logic|
|Dolby Digital EX|
|DTS-HD Master Audio|
|DTS-HD High Resolution Audio|
|DTS-ES||Discrete 6.1, Matrix 6.1|
|Auro 3D with Auro-Matic Upmixer|
|Music Playback via USB||MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD|
|High Resolution Music Playback via USB and/or Network||up to 384 kHz/32 Bit|
|High Resolution Audio Formats via USB||Apple Lossless, WAV, FLAC, AIFF, DSD|
|Multi-Channel Music File Playback via USB|
|DSD via HDMI||2-ch/Multi-ch Input|
|DSD via USB||2-ch Input|
|DSD to PCM Converter|
|DTS Dialog Control|
|Dialog Level Adjustment|
|Compressed Music Enhancer|
|High-resolution Music Enhancer|
|Adaptive DRC (Dynamic Range Control)|
|Initial Volume & Maximum Volume Setting|
|Audyssey Dynamic EQ|
|Audyssey Dynamic Volume|
|Audyssey Sub EQ HT|
|Straight Decoding Mode|
|Pure Direct Mode|
|SILENT CINEMA / Virtual CINEMA DSP|
|Virtual Speakers||including surround back|
|Independent Subwoofer Outputs|
|Auto Speaker Calibration System with Mic.||YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation, Low Frequency mode and Angle measurement|
|PEQ for SUB||Down to 15.6 Hz|
|HLG (Hybrid Log Gamma)|
|BT.2020 color space|
|QMS (Quick Media Switching)|
|ALLM (Auto Low Latency Mode)|
|VRR (Variable Refresh Rate)|
|QFT (Quick Frame transport)|
|Video Signal Passthrough||up to 8K 50/60Hz and 4K 100/120Hz 4:4:4|
|Video Signal Upscaling||up to 4K 60p 4:4:4|
|Analog To HDMI Upconversion|
|Component Video Upscaling|
|Analog to Analog Video conversion|
|isf Certified Calibration Control|
|Works with Amazon Alexa|
|Works with SONOS|
|Apple Product Connection||iPod, iPhone and iPad|
|Remote App||(iPhone® / iPad® / Android™ phone / tablet)|
|InstaPrevue Input Source Prevue|
|HDMI Outputs||3 (2 for MAIN, 1 for ZONE2)|
|USB Input||USB memory, Portable Audio Player|
|USB DC Out Port|
|Analog Audio Line Input||3|
|Analog Audio Line Output|
|Composite Video Input|
|Composite Video Output|
|Component Video Input|
|Component Video Output|
|Front A/V Inputs||USB|
|Headphone Out||6.3 mm (1/4")|
|Powered Zones||Zone 2|
|Zone 2 Outs||RCA Preout|
|Zone B Video Output|
|+12V Trigger Output||2|
|Remote (IR) Input/Output||1 / 1|
|On-Screen Display||Graphical User Interface|
|SCENE||SCENE (8 sets)|
|Web Browser Control|
|Display||High-resolution LCD display|
|Detachable Power Cord|
|SiriusXM Internet Radio|
|Large Speaker Terminals||9|
|Color-Coded Speaker Terminals|
|Gold plated RCA terminals|
|Power Supply||AC 120 V, 60 Hz|
|Power Consumption||410 W|
|Standby Power||0.4 W|
|ECO Mode / Hybrid Standby Function|
|Auto Power Standby|
|Dimensions (W x H x D)||435 mm x 191 mm x 442 mm (with antenna: 435 mm x 270 mm x 442 mm)|
17-1/8" x 7-1/2" x 17-3/8" (with antenna up: 17-1/8" x 10-5/8" x 17-3/8")
|Weight||16.2 kg (35.7 lbs)|
|Power Output (8 Ω, 20 Hz - 20 kHz, 2||110 W (0.06% THD)|
|Power Output (8 Ω, 1 kHz, 2||120 W (0.9% THD)|
|Rated Power Output (8 Ω, 1 kHz, 1 channel Driven)||135 W (0.9% THD)|
|Maximum Effective Output Power (8 Ω, 1 kHz, 1 channel Driven, JEITA)||165 W (10% THD)|
|Power Output (6 Ω, 1 kHz, 1 channel driven, FTC)||140 W (0.9% THD)|
|Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA)||170 W (10% THD)|
|Rated Power Output (4 Ω, 1 kHz, 1 channel Driven)||170 W (0.9% THD, Front)|
|THD||0.05% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω)|
|THD (Phono)||0.04% (Phono to PRE OUT, 1 kHz, 1 V)|
|Damping Factor||120 (Front, 1 kHz, 8 Ω)|
|Input Sensitivity and Impedance (Line)||220 mV/47 kΩ|
|Input Sensitivity and Impedance (Phono MM)||3.7 mV/47 kΩ|
|Maximum Input Sensitivity (Line)||2.4 V (1 kHz, 0.5% THD)|
|Maximum Input Sensitivity (Phono)||45 mV (1 kHz, 0.5% THD)|
|Rated Preout Level and Impedance||1.0 V/470 Ω|
|Maximum Preout Level and Impedance||2.0 V|
|S/N Ratio (Line, IHF-A)||110 dB|
|S/N Ratio (Phono MM, IHF-A)||95 dB|
|Phono RIAA Deviation||0±0.5 dB (20 Hz - 20 kHz)|
|Frequency Response (Analog In)||+0/-3 dB (AUDIO 2 etc. to Front, Pure Direct, 10 Hz to 100 kHz)|
|Residual Noise (IHF-A Network)||150 µV (Speaker Out)|
|Channel Separation at 1 kHz/10 kHz (LINE)||75 dB/61 dB|
|Channel Separation at 1 kHz/10 kHz (PHONO)||75 dB/60 dB|
|DSD Sampling Rates via HDMI||2.8 MHz|
|DSD Sampling Rates via USB||11.2 MHz, 5.6 MHz, 2.8 MHz|
|Wi-Fi Standard||IEEE 802.11 a/b/g/n/ac|
|Wi-Fi Terminal Frequency||2.4 GHz, 5 GHz|
|Bluetooth Frequency||2.4 GHz|
|USB Terminal||USB2.0 5 V, 1 A|
|FM Frequency||87.5 MHz - 107.9 MHz|
|FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.)||Mono: 3 µV (20.8 dBf)|
|FM S/N Ratio||Mono/Stereo: 69 dB/68 dB|
|FM Harmonic Distortion (IHF, 1 kHz)||Mono/Stereo: 0.5%/0.6%|
|AM Frequency||530 kHz - 1710 kHz|
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted