Arcam
Arcam Radia AVP45 16-Channel AV Processor
Arcam Radia AVP45 16-Channel AV Processor
Arcam Radia AVP45 16-Channel AV Processor
The Arcam Radia AVP45 sits at the top of Arcam's Radia AV range — a 16-channel processor built for those who want the full breadth of modern surround formats handled without compromise, and without the constraints of an integrated receiver's power stage getting in the way.
Format Support and Decoding
The AVP45 decodes every major surround format in current use: Dolby Atmos, Dolby TrueHD, DTS:X, DTS HD Master, IMAX Enhanced, and AURO-3D are all on board, alongside their respective upmixing and virtualisation variants — Dolby Surround, Dolby Atmos Height Virtualisation, DTS Neural:X, DTS Virtual:X, and AURO-2D. MPEG-H is supported too.
Dirac Live Room Correction
Dirac Live is built in as standard, and both Dirac Live Bass Control and Dirac Live Active Room Treatment are available as upgrades. Dirac's approach to room correction addresses timing, frequency response, and bass integration together rather than in isolation — the results in a real room are audible.
HDMI and Video
Seven HDMI inputs and three outputs, running to HDMI 2.1a and HDCP 2.3. Resolution support reaches 8K/60Hz or 4K/120Hz, with HDR, HDR10, HDR10+, HDR10+ Gaming, Dolby Vision, and HLG all handled. Variable Refresh Rate and Auto Low Latency Mode are supported for gaming use. On Screen Display: Yes.
Streaming and Connectivity
The AVP45 works with Spotify Connect, Tidal Connect, Qobuz Connect, and Roon (Ready) via the ARCAM Radia AV Control app, alongside Apple AirPlay, Google Cast, Internet Radio, Podcasts, and UPnP playback. Hi-res audio up to 192kHz is supported, with 16- and 24-bit depth, across FLAC, WAV (LPCM), AAC, ALAC, AIFF, MP3, and OGG. Gapless playback is supported. Bluetooth carries Snapdragon Sound and Auracast.
Technical Specifications
| Maximum Channel Count | 16 |
| Reassignable Channels | All channels (Subwoofers into CH4 & 11–16 only) |
| Supported Decoding and Encoding | Dolby Atmos, Dolby TrueHD, Dolby Atmos Height Virtualisation, Dolby Surround, DTS:X, DTS HD Master, DTS Neural:X, DTS Virtual:X, MPEG H, IMAX Enhanced, AURO-3D, AURO-2D |
| HDMI Inputs/Outputs | 7/3 (Zone 1 outputs = 2, Zone 2 outputs = 1) |
| HDMI/HDCP Versions | 2.1a / 2.3 |
| Resolution Support | Up to 8K/60Hz or 4K/120Hz |
| Supported Dynamic Range Profiles | HDR, HDR10, HDR10+, HDR10+ Gaming, Dolby Vision, HLG |
| Supported HDMI Features | Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM) |
| Streaming Services | ARCAM Radia AV Control, Spotify Connect, Tidal Connect, Qobuz Connect, Roon (Ready) |
| Wireless Streaming | Apple AirPlay, Google Cast, Internet Radio, Podcasts, UPnP |
| Supported Hi-res Media | FLAC, WAV (LPCM), AAC, ALAC, AIFF, MP3, OGG |
| Supported Hi-res Bit Depth | 16, 24 |
| Supported Sample Rates | Up to 192 kHz |
| Digital Inputs (Coaxial/Toslink) | 2/2 |
| Supported Sample Rates – Coaxial (RCA) | 192, 176.4, 96, 88.2, 48, 44.1 kHz |
| Supported Sample Rates – Optical (Toslink) | 96, 88.2, 48, 44.1 kHz |
| Bit Depths (Coaxial/Toslink) | 24-bit, 16-bit |
| Frequency Response | 20 Hz–20 kHz ± 0.2 dB |
| Signal/Noise Ratio (A-wtd, ref. 50 W, 0 dBFS) | 100 dB |
| Analogue Inputs | 3 (RCA pairs) |
Who Is It For?
The AVP45 is for the dedicated home cinema builder — someone running a separate power amplifier setup who needs a processor that can handle 16 channels, every current format, and serious room correction without being locked into a closed ecosystem. It is not the right choice for someone who wants a single-box solution; it is the right choice for someone who has already decided that separates are the way forward.
Those building around an Arcam receiver will find the Arcam AVR31 worth comparing — it combines processing and amplification for smaller or simpler installations — while the Arcam AVR11 covers the entry point of the AV receiver range. For two-channel listening in the same system, the Arcam SA45 Streaming Integrated Amplifier is worth considering alongside.
Buying from Martins Hi-Fi
Martins Hi-Fi has been in Norwich since 1968. Elizabeth Gould runs the business today, and we stock only brands we have heard properly and stand behind.
The AVP45 is available to hear at our Norwich showroom — we can demonstrate it in a full multichannel setup so you can judge the Dirac Live room correction and format handling for yourself before committing.
When you get in touch, you'll be speaking with Dave, Chris, and the rest of our team — experienced specialists who can advise on this product and your whole system.
Contact us at info@martinshifi.co.uk, call 01603 627010, or WhatsApp on 07554 687137. You can read more about how we work on our Why Martins Hi-Fi page. We are at 85–91 Ber Street, Norwich, NR1 3EY.
