Here we are comparing Yamaha Aventage RX-A840 to Yamaha Aventage RX-A830 to reveal their common strengths and weaknesses as well as the differences between them which will help you in making a correct decision before the purchase. Both receivers have 7 channel and equally powerful amplifiers.

Let us have a look at some highlights of the models.

We have evaluated both receivers. Yamaha Aventage RX-A840 gets higher overall score in our ranking system which is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

Amplifier score is based on power ratings, minimum impedance load, power supply, transformer type, total harmonic distortion, damping factor, signal to noise ratio and other small details. Audio score depends on the number of channels, front wide channel support, maximum channel processing, support of audio formats, DAC specifications, room calibration algorithm... Video score is based on HDR, Dolby Vision and 4K passthrough, upscaling, analog to HDMI upconversion. Connectivity score is defined from all wired and wireless inputs and outputs, internet and bluetooth connections, HEOS, SONOS and others. Multizone score depends on the number of zones with their outputs. Radio score is evaluated form digital radio support and analog tuner with its frequency range, signal to noise ratio, harmonic distortion...

This section shows those features and specifications which are the reason to choose Yamaha Aventage RX-A840 over Yamaha Aventage RX-A830.

Yamaha Aventage RX-A840 has higher signal to noise ratio. It supports gapless playback.

	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC	MP3, WMA, AAC, WAV, FLAC
High Resolution Audio Formats via USB	Apple Lossless, WAV, FLAC	WAV, FLAC
Gapless Playback	✔	✖
YPAO Volume	✔	✖
Video Signal Passthrough	up to 4K/60p (YCbCr 4:4:4)	up to 4K/30p
Video Signal Upscaling	✔ up to 4K/60p (YCbCr 4:4:4)	✔ up to 4K/30p
Wi-Fi	✔ with Wireless Direct	✔ via optional YWA-10 adapter (sold separately)
Higher Maximum Effective Output Power (8 Ω, 1 kHz, 1 channel Driven, JEITA)	165 W (10% THD)	160 W (10% THD)
Higher S/N Ratio (Line, IHF-A)	110 dB	100 dB
Higher S/N Ratio (Phono MM, IHF-A)	96 dB	81 dB
Better Channel Separation at 1 kHz/10 kHz (LINE)	75 dB/50 dB	60 dB/45 dB
Higher FM S/N Ratio	Mono/Stereo: 71 dB/ 70 dB	Mono/Stereo: 71 dB/69 dB

This section shows those features and specifications which are the reason to choose Yamaha Aventage RX-A830 over Yamaha Aventage RX-A840.

	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Component Video Maximum Resolution	1080i	1080p
Higher Dynamic Power per Channel, 2 Ω, Front)	240 W	250 W
Higher Dynamic Power per Channel, 4 Ω, Front)	195 W	210 W
Higher Dynamic Power per Channel, 6 Ω, Front)	170 W	180 W
Higher Dynamic Power per Channel, 8 Ω, Front)	130 W	140 W
Lower FM Harmonic Distortion (IHF, 1 kHz)	Mono/Stereo: 0.5%/0.6%	Mono/Stereo: 0.3%/0.5%

Yamaha Aventage RX-A840 and Yamaha Aventage RX-A830 share common strengths such as MHL input, DLNA 1.5 support, ethernet connection, wi-fi, bluetooth, phono input, analog pre-outs, internet radio, Spotify and SiriusXM.

STRENGTHS	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch/Multi-ch Input
4K or 8K Video Passthrough	up to 4K/60p (YCbCr 4:4:4)	up to 4K/30p
4K or 8K Signal Upscaling	✔ up to 4K/60p (YCbCr 4:4:4)	✔ up to 4K/30p
MHL Input	✔	✔
DLNA 1.5	✔	✔
Ethernet	✔	✔
Wi-Fi	✔ with Wireless Direct	✔ via optional YWA-10 adapter (sold separately)
Bluetooth	✔ via optional YBA-11 adapter (sold separately)	✔ via optional YBA-11 adapter (sold separately)
New HDCP Version	2.2	2.2
Many HDMI Inputs	8 (1 front)	8 (1 front)
USB Input	iPod® / iPhone® / iPad®, USB memory, portable audio player	iPod® / iPhone® / iPad®, USB memory, portable audio player (MP3, WMA, AAC up to 48 kHz / 16-bit, FLAC / WAV up to 192 kHz / 24-bit)
Phono Input	✔	✔
Composite Video Inputs	5 (1 front)	5 (1 front)
Component Video Inputs	2	2
Analog Pre-Outs	7.2	7.2
Zones	2	2
Analog Tuner	✔ FM/AM with RDS	✔ FM/AM with RDS
Internet Radio	✔ vTuner	✔ vTuner
Spotify	✔	✔
SiriusXM Internet Radio	✔	✔

Yamaha Aventage RX-A840 and Yamaha Aventage RX-A830 share common weaknesses such as no front wide channel support, no Dolby Atmos support, no DTS:X support, no Auro3D support, no HDR10, no Dolby Vision, no ChromeCast, no DTS Play-Fi, no Amazon Alexa, no SONOS, no analog multi-channel input, no Pandora, no Tidal and no Deezer.

WEAKNESSES	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
No Front Wide Channel Support	✖	✖
No Dolby Atmos	✖	✖
No Dolby Atmos Height Virtualization	✖	✖
No DTS:X	✖	✖
No DTS Neural:X	✖	✖
No DTS Virtual:X	✖	✖
No IMAX Enhanced	✖	✖
No Auro 3D with Auro-Matic Upmixer	✖	✖
No DTS Dialog Control	✖	✖
No Audyssey Dynamic EQ	✖	✖
No Audyssey Dynamic Volume	✖	✖
No Audyssey LFC	✖	✖
No Audyssey Sub EQ HT	✖	✖
No HDR10	✖	✖
No HDR10+	✖	✖
No Dynamic HDR	✖	✖
No Dolby Vision	✖	✖
No Auto Low Latency Mode Pass-through	✖	✖
No VRR	✖	✖
No QFT	✖	✖
No FireConnect	✖	✖
No FlareConnect	✖	✖
No MusicCast	✖	✖
No Chromecast Built-In	✖	✖
No DTS Play-Fi	✖	✖
Does not Work with Amazon Alexa	✖	✖
Does Not Work with SONOS	✖	✖
No eARC	✖	✖
No Multi-Channel Input	✖	✖
No Pandora	✖	✖
No Tidal	✖	✖
No Deezer	✖	✖

Amplifier

Yamaha Aventage RX-A840 and Yamaha Aventage RX-A830 have 7 channel amplifiers. They both deliver 100 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) and have stable performance at 4 Ω load.

Video Features

Yamaha Aventage RX-A840 supports 4K passthrough up to 60p and Yamaha Aventage RX-A830 supports 4K passthrough up to 30p. Yamaha Aventage RX-A840 can do 4K upscaling up to 60p and Yamaha Aventage RX-A830 can do 4K upscaling up to 30p.

Adaptive DRC

Yamaha Aventage RX-A840 and Yamaha Aventage RX-A830 feature 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.

Connectivity

Yamaha Aventage RX-A840

Yamaha Aventage RX-A840 can be connected to internet using ethernet cable or built-in wi-fi adapter. It can also connect to bluetooth devices via optional YBA-11 adapter (sold separately). The Receiver supports AirPlay. It has 8 HDMI inputs with HDCP 2.2 copy protection. There is a phono input with built-in phono stage for connecting the cartridge output of the turntable directly to the Receiver. There are 7.2 channel analog pre-outs for external amplification.

Front panel has HDMI (MHL support), USB, analog audio and composite inputs.

Yamaha Aventage RX-A830

Yamaha Aventage RX-A830 can be connected to internet using ethernet cable or wirelessly via optional YWA-10 adapter (sold separately). It can also connect to bluetooth devices via optional YBA-11 adapter (sold separately). The Receiver supports AirPlay. It has 8 HDMI inputs with HDCP 2.2 copy protection. There is a phono input with built-in phono stage for connecting the cartridge output of the turntable directly to the Receiver. There are 7.2 channel analog pre-outs for external amplification.

Front panel has HDMI (MHL support), USB, analog audio and composite inputs.

And in the end let us list the detailed specifications of the receivers side-by-side.

Note: The following table shows only those details which are applicable for both models and excludes the ones that are applicable for only one model. If you want to see a full list of specs for each model please visit their individual pages here - Yamaha Aventage RX-A840 and here - Yamaha Aventage RX-A830.

BASICS	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Brand	Yamaha	Yamaha
Series	Aventage	Aventage
Model	RX-A840	RX-A830
Type	A/V Receiver	A/V Receiver
Country	UK and Europe	UK and Europe
Release Year	2014	2013

AMPLIFIER	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Channels	7.2	7.2
Front Wide Channel Support	✖	✖
THX™ Certification	✖	✖
Continuous 6 Ω Rated	✔	✔
Certified 4 Ω Performance	✔	✔
Bi-amp Capability	✔	✔

AUDIO	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Surround:AI™	✖	✖
DAC	Burr-Brown	Burr-Brown
Maximum Channel Processing	7.1	7.1
Air Studios Monitor Certification	✖	✖
Dolby Atmos	✖	✖
Dolby Atmos Height Virtualization	✖	✖
Dolby TrueHD	✔	✔
Dolby Digital Plus	✔	✔
Dolby Surround Upmixer	✖	✖
Dolby Pro Logic	✔ PLIIx	✔ PLIIx
Dolby Digital EX	✔	✔
DTS:X	✖	✖
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
Music Playback via USB	MP3, WMA, AAC, Apple Lossless, WAV, FLAC	MP3, WMA, AAC, WAV, FLAC
High Resolution Music Playback via USB and/or Network	✔ up to 192 kHz	✔ up to 192 kHz
High Resolution Audio Formats via USB	Apple Lossless, WAV, FLAC	WAV, FLAC
Multi-Channel Music File Playback via USB	✖	✖
Gapless Playback	✔	✖
DSD via HDMI	✔ 2-ch/Multi-ch Input	✔ 2-ch/Multi-ch Input
DSD to PCM Converter	✖	✖
USB DAC	✖	✖
Jitter Reduction	✔ Ultra low jitter PLL circuitry	✔ Ultra low jitter PLL circuitry
DTS Dialogue Control	✖	✖
Dialog Level Adjustment	✔	✔
Dialog Normalization	✔	✔
Dialogue Lift	✔ no presence speakers required	✔ no presence speakers required
Compressed Music Enhancer	✔	✔
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	✖	✖
Straight Decoding Mode	✔	✔
Pure Direct Mode	✔ with Video On mode	✔ with Video On mode
CINEMA DSP	✔ 3D	✔ 3D
DSP Programs	17	17
SILENT CINEMA / Virtual CINEMA DSP	✔	✔ / ✔ (AIR SURROUND XTREME)
Virtual Speakers	✔	✔

CALIBRATION	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Auto Speaker Calibration System with Mic.	✔ YPAO sound optimization (R.S.C. with Multipoint measurement)	✔ YPAO sound optimization (R.S.C. with Multipoint measurement)
YPAO Volume	✔	✖
PEQ for SUB	Down to 31 Hz	Down to 31 Hz

VIDEO	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Video Signal Type	PAL	PAL
Video Signal Format (Video Covnersion)	NTSC/PAL	NTSC/PAL
HDR10	✖	✖
HDR10+	✖	✖
Dynamic HDR	✖	✖
BT.2020 color space	✖	✖
Dolby Vision	✖	✖
Hybrid Log Gamma (HLG)	✖	✖
Quick Media Switching (QMS)	✖	✖
Auto Low Latency Mode (ALLM)	✖	✖
Variable Refresh Rate (VRR)	✖	✖
Quick Frame Transport (QFT)	✖	✖
3-D Ready	✔	✔
Video Signal Passthrough	up to 4K/60p (YCbCr 4:4:4)	up to 4K/30p
Video Signal Upscaling	✔ up to 4K/60p (YCbCr 4:4:4)	✔ up to 4K/30p
Analog To HDMI Upconversion	✔ Component**, Composite	✔ Component****, S-Video, Composite
Component Video Upscaling	✖	✖
Analog to Analog Video conversion	✖	✖
Component Video Maximum Resolution	1080i	1080p
Video Parameter Adjustments	✖	✖
isf Certified Calibration Control	✖	✖

CONNECTIVITY	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
MHL Input	✔	✔
DLNA 1.5	✔	✔
FireConnect	✖	✖
FlareConnect	✖	✖
MusicCast	✖	✖
Chromecast Built-In	✖	✖
DTS Play-Fi	✖	✖
Works with Amazon Alexa	✖	✖
Works with SONOS	✖	✖
AirPlay	✔ AirPlay	✔ AirPlay
Apple Product Connection	✔ iPod, iPhone and iPad	✔ iPod, iPhone and iPad
Remote App	✔ (iPhone / iPad, Android™ phone / tablet, Kindle Fire™)	✔ (iPhone / iPad, Android™ phone / tablet, Kindle Fire™)
InstaPrevue Input Source Prevue	✖	✖
Ethernet	✔	✔
Ethernet Switch	✖	✖
Wi-Fi	✔ with Wireless Direct	✔ via optional YWA-10 adapter (sold separately)
Bluetooth	✔ via optional YBA-11 adapter (sold separately)	✔ via optional YBA-11 adapter (sold separately)
HDBaseT Compatible	✖	✖
Enhanced Audio Return Channel (eARC)	✖	✖
HDCP Version	2.2	2.2
HDMI Inputs	8 (1 front)	8 (1 front)
HDMI Outputs	2	2
USB Input	iPod® / iPhone® / iPad®, USB memory, portable audio player	iPod® / iPhone® / iPad®, USB memory, portable audio player (MP3, WMA, AAC up to 48 kHz / 16-bit, FLAC / WAV up to 192 kHz / 24-bit)
USB DC Out Port	✔ (USB DC output 5 V / 0.5 amp)	✔ (USB DC output 5 V / 0.5 amp)
Analog Audio Line Inputs	5 (1 front)	5 (1 front)
Analog Audio Line Outputs	1	1
Phono Input	✔	✔
Optical Inputs	2	2
Optical Outputs	✖	✖
Coaxial Inputs/Outputs	2 / No	2 / No
Composite Video Inputs	5 (1 front)	5 (1 front)
Composite Video Outputs	2	2
S-Video Inputs	✖	✖
S-Video Outputs	✖	✖
Component Video Inputs	2	2
Component Video Outputs	1	1
PC In	✖	✖
Multi-Channel Input	✖	✖
Analog Pre-Outs	7.2	7.2
XLR Inputs	✖	✖
XLR Pre-outs	✖	✖
Front A/V Inputs	HDMI (MHL support), USB, analog audio, composite	HDMI (MHL support), USB, analog audio, composite
Speaker A/B	✖	✖
Headphone Out	✔ 6.3 mm	✔ 6.3 mm

ZONES	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Zones	2	2
Powered Zones	Zone 2	Zone 2
Zone 2 Outs	Line Out	Line Out
Zone B Video Output	✔	✔ (HDMI)
Zone GUI	✖	✖
RS-232 Interface	✖	✖
+12V Trigger Output	✔ (1)	✔ (1)
Remote (IR) Input/Output	1 / 1	1 / 1
Party Mode	✔	✔

MISC	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
On-Screen Display	Graphical user interface	Graphical user interface
SCENE	SCENE (four sets)	✔ (four sets)
Web Control	✔	✔
PreAmp Mode	✖	✖
Remote Controller	✔	✔ (Preset)
Detachable Power Cord	✔	✔
dockport	✖	✖

RADIO	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Analog Tuner	✔ FM/AM with RDS	✔ FM/AM with RDS
Presets	40	40
Digital Radio	✖	✖
Internet Radio	✔ vTuner	✔ vTuner
Pandora	✖	✖
Spotify	✔	✔
Tidal	✖	✖
Deezer	✖	✖
SiriusXM Internet Radio	✔	✔

CONSTRUCTION	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
A.R.T. Wedge	✔	✔
Speaker Terminals	9	9
Large Speaker Terminals	9	9
Color-Coded Speaker Terminals	✖	✖
Gold plated RCA terminals	✖	✖

POWER	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Power Supply	AC 230 V, 50 Hz	AC 230 V, 50 Hz
Power Consumption	300 W	300 W
Standby Power	0.1 W	0.15 W

GENERAL	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
ECO Mode / Hybrid Standby Function	✔	✔
Auto Power Standby	✔	✔
Dimensions (W x H x D)	435 mm x 171 mm x 367 mm (with antenna: 435 mm x 234 mm x 380 mm) 17-1/8" x 6-3/4" x 14-1/2" (with antenna: 17-1/8" x 9-1/4" x 15")	435 mm x 171 mm x 369 mm 17-1/8" x 6-3/4" x 14-1/2"
Weight	10.6 kg (23.4 lbs)	10.5 kg (23.2 lbs)
Warranty	3 Years	3 Years

SPECS	Yamaha Aventage RX-A840	Yamaha Aventage RX-A830
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)	100 W (0.09% THD)	100 W (0.09% THD)
Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC)	110 W (0.9% THD)	110 W (0.9% THD)
Rated Power Output (8 Ω, 1 kHz, 1 channel Driven)	130 W (0.9% THD)	130 W (0.9% THD)
Maximum Effective Power Output (8 Ω, 1 kHz, 1 channel Driven, JEITA)	165 W (10% THD)	160 W (10% THD)
Rated Power Output (4 Ω, 1 kHz, 1 channel Driven)	160 W (0.9% THD)	160 W (0.9% THD)
Dynamic Power per Channel (2 Ω, Front)	240 W	250 W
Dynamic Power per Channel (4 Ω, Front)	195 W	210 W
Dynamic Power per Channel (6 Ω, Front)	170 W	180 W
Dynamic Power per Channel (8 Ω, Front)	130 W	140 W
THD	0.06% (AV 5 etc. to Front, Pure Direct, 20 Hz - 20 kHz, 50 W, 8 Ω)	0.06% (AV 5 etc. to Front, Pure Direct, 20 Hz - 20 kHz, 50 W, 8 Ω)
THD (Phono)	0.02% (PHONO to AV OUT, 20 Hz - 20 kHz, 1 V)	0.02% (PHONO to AV OUT, 20 Hz - 20 kHz, 1 V)
Damping Factor	100 (Front, 20 Hz - 20 kHz, 8 Ω)	100 (Front, 20 Hz - 20 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)	200 mV/47 kΩ	200 mV/47 kΩ
Input Sensitivity and Impedance (Phono MM)	3.5 mV/47 kΩ	3.5 mV/47 kΩ
Maximum Input Sensitivity (Line)	2.3 V	2.3 V
Maximum Input Sensitivity (Phono)	60 mV	60 mV
Rated Preout Level and Impedance	1.0 V/1.2 kΩ	1.0 V/1.2 kΩ
Rated Lineout Level and Impedance	200 mV/1.2 kΩ (AV OUT)	200 mV/1.2 kΩ (AV OUT)
Rated Headphone Jack Output Level and Impedance	100 mV/560 Ω (AV 5 etc., 1 kHz, 50 mV, 8 Ω)	100 mV/560 Ω (AV 5 etc., 1 kHz, 50 mV, 8 Ω)
S/N Ratio (Line, IHF-A)	110 dB	100 dB
S/N Ratio (Phono MM, IHF-A)	96 dB	81 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 dB	60 dB/45 dB
Channel Separation at 1 kHz/10 kHz (PHONO)	60 dB/55 dB	60 dB/55 dB
DSD Sampling Rates via HDMI	2.8 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 (Component Y) 0.7 Vp-p/75 Ω (Component PB/CB, PR/CR) 1 Vp-p/75 Ω (Composite)
Video Maximum Input	1.5 Vp-p	1.5 Vp-p
Video Frequency Response	5 Hz to 60 MHz, -3 dB (Component)	5 Hz to 60 MHz, -3 dB (Component)
Video S/N Ratio	50 dB	50 dB
Ethernet Standard	10BASE-T/100BASE-TX	10BASE-T/100BASE-TX
HDMI Input/MHL Terminal	5 V, 1 A	5 V, 1 A
USB Terminal	USB2.0 5 V, 2.1 A	USB2.0 5 V, 2.1 A
FM Frequency	87.50 MHz - 108.00 MHz	87.50 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 Ratio	Mono/Stereo: 71 dB/ 70 dB	Mono/Stereo: 71 dB/69 dB
FM Harmonic Distortion (IHF, 1 kHz)	Mono/Stereo: 0.5%/0.6%	Mono/Stereo: 0.3%/0.5%
AM Frequency	531 MHz - 1611 MHz	531 MHz - 1611 MHz

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