ARCAM’s new A5+, A15+, and A25+ integrated amplifiers will be shown for the first time in North America at CEDIA Expo 2025. The three new Radia+ models build on the DNA of the outgoing A5, A15, and A25 with upgraded circuitry, refined components, and intelligent power management. Each amplifier incorporates ARCAM’s latest Bluetooth 5.4 platform, featuring Snapdragon Sound (AptX Lossless) for bit-perfect CD-quality streaming, LE Audio, and Auracast, which allows one-to-many wireless playback without the need for pairing.
Both the A15+ and A25+ now include HDMI eARC — a connectivity upgrade over their predecessors. The Class G-powered A25+ also gains a precision-cut glass front panel that sharpens and brightens the display, complementing the ST25 streaming partner. It receives the most substantial update of the range, with a new transformer featuring a dedicated winding for the digital and DAC circuitry, double linear regulation in the analog power supplies, and further power and mains filtering refinements to lower impedance and enhance overall clarity.
The transformer upgrades in both the A15+ and A25+ further reduce unwanted current within the chassis; meanwhile, the A5+ benefits from component refinements that cut PCB interference and lower power supply impedance. The A25+ design also incorporates an ESS9018 DAC dedicated to SPDIF inputs.
Noise reduction remains a key engineering focus. By selectively powering down idle components, the overall noise floor is significantly decreased. For example, the DAC PCB is powered down when an analog input is used; the Bluetooth and HDMI modules are powered off with the Autoswitch features disabled; and the trigger input is powered down when no cable is connected — all measures that contribute to a cleaner power supply environment.
ARCAM Radia+ Amplifiers – Model Summaries:
- A5+: Offers 2x50W Class AB power and a wide range of digital and analog inputs, including a tuned MM phono stage. Now with Auracast and upgraded Bluetooth 5.4, including support for Snapdragon Sound, and reduced-noise power supply. MSRP $1199.95.
- A15+: Provides 2x80W Class AB amplification, HDMI eARC for seamless TV integration, and all the wireless upgrades of the A5+. MSRP: $1499.95.
- A25+: The flagship Radia+ integrated amplifier delivers 2x100W of Class G power, an additional DAC for SPDIF inputs, USB-C input, HDMI eARC, and an OLED display behind a glass panel that matches the ST25. MSRP: $1999.95.
The ARCAM A5+, A15+, and A25+ make their American debut at CEDIA Expo 2025, booth #2512, and will start shipping in early Q4 2025.
For more information, visit www.arcam.co.uk.
