Yamaha RX-A8A

The RX-A8A is a Yamaha 11.2-channel audio-video receiver, designed to drive a complete multichannel home cinema installation. It handles both speaker amplification and the processing of audio and video streams passing through the HDMI inputs, making it the heart of a demanding living room setup.

The stated power reaches 150 W per channel at 8 ohms in 2-channel operation, and up to 220 W in 1-channel mode according to the JEITA standard at the same impedance. This difference illustrates the power reserve available when the unit is only driving a single channel, a useful point to bear in mind when sizing a multichannel configuration where each speaker does not receive the same workload. On the video side, HDMI pass-through supports 8K at 60 Hz and 4K at 120 Hz, allowing recent sources to pass through without signal degradation to the screen or projector. The unit is also compatible with Dolby Atmos and DTS:X for playback of immersive multichannel sound formats.

This model is aimed at a user wishing to build or upgrade a multichannel home cinema installation, with enough channels to go beyond a standard 5.1 or 7.1 configuration. It suits a room dedicated to picture and sound, where immersive formats and recent video sources are to be enjoyed under good conditions.

When buying used, a few points deserve particular attention with this type of unit: the correct operation of all HDMI inputs and outputs, actual playback of 8K/60 Hz and 4K/120 Hz streams via these sockets, as well as the behaviour of the amplification channels across the full stated power, particularly those less commonly used. It is also advisable to check the condition of the speaker connectors and the absence of noise or distortion on each of the 11.2 channels, as well as the unit's proper communication with a home network if the connectivity features are used.

• 11.2-channel audio-video amplifier
• 2-channel power: 150 W at 8 ohms
• 1-channel power (JEITA): 220 W at 8 ohms
• Compatible with Dolby Atmos and DTS:X
• HDMI pass-through 8K/60 Hz and 4K/120 Hz

With dimensions of 435 x 192 x 477 mm and a weight of 22.1 kg, the RX-A8A displays a size and mass reflective of a dense build, typical of multichannel receivers at this level.