At this year’s CEDIA Expo 2025 in Denver, Arcam introduced three new integrated amplifiers—the A5+, A15+, and A25+—marking the latest additions to its Radia lineup. These new models take the original Radia amps from 2023 and give them a thoughtful update, focusing on modern connectivity, internal refinements, and smart power management without overhauling the look or feel that made the original series stand out.

If you're familiar with the original Radia series, you’ll recognize the same sleek black finish with yellow accents. But under the hood, Arcam has made some meaningful tweaks—especially for folks looking to streamline their setups while still wanting high-quality sound and flexibility.

Let’s start with one of the more noticeable updates: all three models now include Bluetooth 5.4, which means they support aptX Lossless for CD-quality streaming, LE Audio, and Auracast. That last one’s particularly handy—it allows you to stream audio to multiple speakers or headphones at once, without the usual pairing hassle.

The A15+ and A25+ models also now include HDMI eARC, so you can plug them straight into your TV for high-quality audio output without needing a separate AV receiver. If you're aiming for a clean setup in the living room that works just as well for movie nights as it does for vinyl listening, this is a convenient addition.

Arcam didn’t just focus on external features either. Across all three models, the internal circuitry has been updated to reduce noise and improve efficiency. Components that aren't in use automatically power down—so if you're listening to an analog input, the DAC turns off. No Bluetooth or HDMI in use? Those modules shut down too. It's a behind-the-scenes update, but it helps maintain a cleaner power environment inside the unit and reduces unwanted noise.

“With the A5+, A15+, and A25+, we’ve taken everything people love about the Radia amplifiers and pushed performance to the next level. From the upgraded circuitry and next-generation Bluetooth to the expanded connectivity, every change enhances the user experience,” says Jim Garrett, senior director, product strategy and planning at Arcam and Harman Luxury Audio. “These are amplifiers built for the way people enjoy music today, and for many years to come.”

Here’s how the new lineup breaks down, depending on what kind of system you’re building and how much power or flexibility you need:

• Arcam A5+: This one’s built as a solid entry point for those stepping into premium hi-fi. It delivers 2 x 50W of Class AB power, comes with a moving magnet phono stage, a 3.5mm headphone jack, and supports both digital and analog sources. And yes, you get Bluetooth 5.4, aptX Lossless, and Auracast, so you’re covered on the wireless front. Price: $1,199.95 / £749.
• Arcam A15+: Think of the A15+ as the middle sibling with a little more muscle. It bumps the power up to 2 x 80W, still uses Class AB amplification, and adds that new HDMI eARC input for better TV integration. It also shares the improved transformer found in the flagship A25+. Price: $1,499.95 / £1,199.
• Arcam A25+: This is the top model in the range and includes the biggest internal and external upgrades. It features 2 x 100W of Class G amplification, a USB-C input, HDMI eARC, and a dedicated ESS9018 DAC just for the SPDIF inputs. It also has a glass front panel with an OLED display that lines up visually with Arcam’s ST25 streaming unit if you want to pair the two. Price: $1,999.95 / £1,699.

Most of the big changes in the A25+ are inside. It now includes a new transformer with a separate winding for the digital and DAC circuits, dual linear regulation for the analog power supply, and extra filtering on the power and mains inputs. These upgrades are meant to clean up the signal path and help with overall clarity.

Meanwhile, the A15+ shares some of those transformer updates, and even the A5+ gets a more efficient component layout that reduces interference on the PCB and lowers impedance in the power supply.

All three models are set to begin shipping in early Q4 2025, following their debut at Booth #2512 during the CEDIA Expo. Pricing has been confirmed for the U.S. and U.K., but international availability and currency conversions are still TBD.