The A25+ forms the pinnacle of the Arcam Radia series, consistently focusing on maximum sound quality and technical precision.
At its heart is Class G amplification, which combines the advantages of Class A/B with higher efficiency. With 2 x 100 watts, the amplifier delivers an extremely controlled, dynamic, and detailed reproduction – even with demanding loudspeakers.
An integrated ESS DAC ensures high-quality conversion of digital signals, while HDMI eARC and USB-C offer modern connectivity options. Bluetooth with aptX Adaptive complements the system with convenient streaming.
Special attention is paid to the power supply: separate areas for analog and digital sections as well as optimized filtering reduce interference to a minimum.
The result is an exceptionally clear, quiet sound with high resolution and excellent spatial representation – an amplifier for ambitious HiFi enthusiasts.
- ARCAM Class G amplification – for ultra-low distortion
- 2 × 100W of output power – effortlessly powers speakers.
- Wireless audio with integrated Snapdragon Sound and Auracast – for the best sound and maximum convenience
- Wired or wireless headphones – connect your headphones for undisturbed listening pleasure, with or without cables
- HDMI eARC/ARC input
- USB-C input
- Finely tuned phono stage – ensures your records sound as detailed and engaging as possible
- Plastic-free packaging – for easy disposal of natural materials
Technical data
| Amplifier Power Output | |
|---|---|
| Continuous power output (0.5% THD), per channel | |
| 2 channels, 20 Hz – 20 kHz, 8 Ω | 100 W |
| 2 channels, 1 kHz, 4 Ω | 165 W |
| Total harmonic distortion (at 80% power, 8 Ω, 1 kHz) | 0.002 % |
| Analogue Inputs | |
| Number of inputs | 3 (RCA pairs) |
| Signal/Noise ratio (A-weighted, Ref. 50 W, 1 V input) | 106 dB |
| Frequency response | 20 Hz – 20 kHz ± 0.2 dB |
| Phono Input (MM) | |
| Input impedance | 47 kΩ + 100 pF |
| Frequency response (RIAA reference) | 20 Hz – 20 kHz ± 1 dB |
| Digital Inputs | |
| Supported Sample Rates (USB-C) | 384 / 352.8 / 192 / 176.4 / 96 / 88.2 / 48 / 44.1 kHz |
| Supported Sample Rates (other digital inputs) | 192 / 176.4 / 96 / 88.2 / 48 / 44.1 kHz |
| Bit Depths | 32 / 24 / 16 Bit |
| Frequency Response (Filter 1) | 20 Hz – 20 kHz ± 0.2 dB |
| Signal/Noise Ratio (A-weighted, Ref. 50 W, 0 dBFS) | 109 dB |
| Headphone Output | |
| Max. Output Voltage (RMS) at 32 Ω / 300 Ω | 2.5 V / 5 V |
| Supported Load Range | 16 Ω – 2 kΩ |
| Wireless | |
| Bluetooth Version | 5.4; A2DP Sink/Source, AVRCP, BLE, SBC, AAC, aptX, aptX HD, aptX Lossless, LE Audio, Auracast |
| Bluetooth Frequency & Power | 2.400 – 2.483.5 MHz; < 20 dBm |
| General | |
| Mains Voltage | 100 V / 110–120 V / 220–240 V, 50–60 Hz |
| Power Consumption (max.) | 500 W |
| Power Consumption (Standby) | < 0.5 W |
| Dimensions (W x D x H incl. terminals & feet) | 431 x 344 x 83 mm |
| Weight (net) | 9 kg |
| Weight (packed) | 12 kg |
| Included in the box | |
| Mains Power Cable | Yes |
| Remote Control | incl. 2 x AAA batteries |
| Quick Start Guide | Yes |
| Safety Instructions | Yes |
