Seven Class G power stages and sixteen-channel decoding for the amplified HDA flagship
Arcam AVR31 is an AV receiver with 16-channel decoding, seven 100 W Class G power stages, HDMI 2.1 8K, Dirac Live, Dolby Atmos, DTS:X and Auro-3D.
AVR31 sits at the top of the HDA AV receivers with built-in power amplification, combining 16-channel processing with seven Class G output stages. It is designed for high-level cinema rooms where the internal amplification should retain the musical qualities of Arcam stereo designs while preserving expansion through pre-outs.
Key features
- Native 16-channel decoding for Dolby Atmos, DTS:X and Auro-3D.
- Seven Class G channels with stated output of 7x100 W.
- Dirac Live Room Correction included and ready for Dirac Live Bass Control.
- Dual ESS 9026PRO DACs with ESS reference regulators.
- Seven HDMI 2.1 inputs and three outputs with HDCP2.3, including Zone 2.
- 8K/60 Hz and 4K/120 Hz support on every HDMI input.
- Spotify Connect, Tidal Connect, AirPlay 2, Google Cast, MQA and Roon Ready.
- Toroidal transformer, Wi-Fi, Ethernet, Bluetooth aptX HD, RS232 and IR.
- Gold-plated loudspeaker binding posts.
Class G across seven channels
The central difference from AVR21 is the Class G power section derived from technology used in Arcam stereo amplifiers. The seven channels are stated at 100 W each and work with an oversized toroidal transformer, aiming to combine efficiency, low noise and greater dynamic reserve.
Sixteen channels of processing
AVR31 natively decodes 16 channels of Dolby Atmos, DTS:X and Auro-3D while its internal amplification covers seven. Pre-outs for every channel allow extended immersive layouts to be completed with external power amplifiers while AVR31 remains the centre for processing, control and streaming.
HDMI 2.1 and 8K video
Seven HDMI inputs and three outputs, including Zone 2, support HDMI 2.1, HDCP2.3 and eARC. Every input handles 8K/60 Hz and 4K/120 Hz together with Dolby Vision, HDR10+, HDR10 and HLG, allowing the receiver to serve high-performance video sources as well.
Dirac Live
Dirac Live Room Correction is included to measure and optimise system response in the room. The platform is also ready for Dirac Live Bass Control, available with an additional licence, for more advanced low-frequency management across the room.
DACs and streaming
Dual ESS 9026PRO DACs with ESS reference regulators handle multichannel conversion. Spotify Connect, Tidal Connect, AirPlay 2, Google Cast, MQA and Roon Ready sit alongside Arcam music life App and UPnP, with Wi-Fi, Ethernet and Bluetooth aptX HD.
Installation and control
RS232, IR and IP control support custom integration, while RCA pre-outs allow amplification to be distributed across external power amplifiers. The FM/DAB+ tuner, headphone output and triggers complete a platform combining home cinema and music listening. Gold-plated loudspeaker binding posts are an additional construction detail that distinguishes AVR31 from AVR21 in the power and loudspeaker-connection section.
Dimensions and accessories
The chassis measures 433 x 171 x 425 mm and weighs 18.1 kg, with the published figures matching. Supplied accessories include mains lead, remote with batteries, DAB/FM aerial, three Wi-Fi/Bluetooth antennas, calibration microphone and USB cable.