Yamaha RX-A840

Yamaha RX-A840 7.2 channel AV receiver

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"With the new RX-A850 arriving we are clearing the last of our brand new RX-A840 receivers at a bargain price. Grab them whislt they last!"
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The Yamaha RX-A840 is a good amp. Please don't get us wrong. If you want it then we'd say you'll be a very happy customer. However, we do think that it's at an odd position in comparison to the rest of Yamaha's range and therefore isn't necessarily the best choice.

The reason for this is that the RX-V777 is effectivey the same machine in a different chassis. It's part of the RX-V range so only comes with a 1 year warranty instead of the Aventage range's 3 year warranty, but shares the same essential components such as the DSP and audio sections. As such the only improvements on sound quality come with the sturdier chassis. Yes, it does make a difference, but not one that is necessarily commensurate with the large price difference.

For a very small amount more you could instead move to the RX-A1040 which DOES have improvements on sound and features over this unit, and also has the larger style chassis seen on the rest of the Aventage range. We think this therefore offers a better choice if you do indeed wish to move to the Aventage range.

Of course, if your heart is set on the RX-A840 then you are still going to get a high quality unit, but we think it's worth considering all the options before jumping in. You can always speak to our experts who will be able to guide you in buiding your perfect cinema system.

Also known as: RX A840, RXA840

Tech Spec


Model RX-A840
Range Aventage

Amplifier Section

Amplifier type Integrated
Maximum surround 7.2
Number of channels 7
Subwoofer pre-outs 2
Power rating at 4 ohms
Power per channel 160W
Multiroom 1 other room - different source and volume (Zone 2)
Tone Controls Direct (pure sound)

Audio Section

Surround sound processing Dolby Digital Plus, Dolby Pro Logic IIx, Dolby True HD, DTS-HD Master Audio
Set-up microphone Yes
A/V setup format Yamaha YPAO
Supports ARC (audio return channel) Yes

Video Section

Is it 3D? Yes
Supported video formats 576p, 720p, 1080i, 1080p, 4K, Upconverts all signals to HDMI
4K passthrough Yes

Tuner Section

Tuner AM, FM

Inputs and Outputs

HDMI connections 8 in, (1 on front), 2 out
Component connections 2 in, 1 out
Composite connections 5 in, (1 on front), 2 out
USB connections 1, (1 on front), To playback from USB sticks, To playback from USB hard drives
Analog connections 6 in, 1 out
Optical connections 2 in
Digital Co-axial connections 2 in
Apple connections iPad, iPhone & iPod via USB, Airplay
Phono connections Yes
Aerial connections 1 x AM input, 1 x FM input
Headphone output Yes, 3.5 mm


Internet services DLNA (stream from your own computer), Apple AirPlay, Napster, Spotify


Remote Control Remote control included, Apple app available, Android app available


Dimensions (W x H x D) 435 x 171 x 369 mm
Net weight 10.6 kg