Arcam
Arcam A25 Amplifier
Best integrated amplifier for audiophiles seeking refined, high-resolution sound performance.
The Arcam A25 is a distinguished integrated amplifier from the Radia series, celebrated for its refined sound quality and extensive feature set. It utilizes Arcam's advanced 5th generation Class G amplification, which efficiently switches power supplies to deliver pure Class A performance at low volumes. This design results in a civilized, dynamic sound that is difficult to push into harshness. The A25 offers comprehensive connectivity, including analog, digital, USB-C inputs, a phono stage, and high-resolution DAC support. While powerful enough for many speakers, note that this model is currently discontinued.
$1999.00
More Radia Options
Owner Satisfaction
4.6
/ 5
Category Rank
838
/ 1646
#838 in Power Amplifiers
Price vs Category Average
-76%
Below average
Continuous power output (8Ω)
100
/ W per channel
Who it's for
- Music lovers needing connectivity for both digital and vinyl sources
- Design-conscious homeowners wanting a sleek, modern aesthetic
- Audiophiles seeking sonic purity without excessive heat generation
Who should skip it
- Users preferring intuitive, high-visibility interface displays
- Budget-focused buyers looking for entry-level pricing
- Listeners wanting an all-in-one streaming solution
Performance breakdown
Sonic Refinement
Class G topology delivers a smooth, fatigue-free listening experience.
Power Efficiency
Intelligent power switching maintains high performance without excessive heat.
Connectivity Versatility
Broad input range handles everything from vinyl to high-res digital streams.
Drive Capability
Robust output easily manages most demanding bookshelf and floorstanding speakers.
Digital Precision
Integrated high-resolution DAC provides exceptional clarity for modern digital sources.
Build Integrity
Solid construction ensures long-term reliability for your home audio setup.
Key Specs
Continuous power output (8Ω)
100W per channel
Continuous power output (4Ω)
165W per channel
Harmonic distortion
0.002% (80% power, 8Ω at 1kHz)
Signal/noise ratio
106dB (Analog), 110dB (Digital)
Frequency response
20Hz-20kHz ± 0.2dB
Dimensions (WxDxH)
431 x 344 x 83mm
Weight
9kg (net)
Amplifier Class
Class G/H
Features
- 5th generation Class G amplifier for efficient power
- Refined and civilized sound signature
- Comprehensive input selection for versatile connectivity
- Built-in DAC supports high-resolution audio
- aptX Adaptive Bluetooth for wireless streaming
- Integrated amplifier design
- Ample power to drive many speakers
What customers say
The Arcam A25 Amplifier earns high praise for its exceptional sound quality and modern versatility. Reviewers consistently highlight the sophisticated Class G amplification, which provides dynamic power and a detailed, articulate, and neutral presentation. This performance allows the amplifier to drive demanding speakers effortlessly. A key advantage is its feature set, including seamless HDMI ARC integration for home theater setups and high-quality Bluetooth connectivity. Users also appreciate the robust build and sleek, updated design. While positioned in the premium category, the consensus is that the superior performance and advanced technology fully justify the investment, making it a significant upgrade for serious audio enthusiasts.
Know before you buy
Class G amplification uses a multi-rail power supply system that allows the amplifier to run in pure Class A at lower volumes for maximum clarity. As the demand for power increases, it seamlessly switches to a more efficient Class G mode, providing the necessary headroom for dynamic peaks without sacrificing sound quality.
Yes, the A25 features a built-in phono stage, allowing you to connect a turntable directly to the amplifier without needing an external pre-amp. It is designed to handle standard moving magnet cartridges.
Yes, the integrated DAC is designed to handle high-resolution audio, ensuring that your digital sources are processed with high precision and low distortion. You can connect digital sources via the various inputs, including USB-C, to take full advantage of this capability.
With 100W per channel into 8 ohms and 165W into 4 ohms, the A25 has significant power reserves. It is capable of driving a wide range of speakers effectively, though performance will ultimately depend on the specific sensitivity and impedance characteristics of your chosen speakers.
Yes, the A25 includes aptX Adaptive Bluetooth, which allows for high-quality wireless streaming from compatible smartphones, tablets, and computers. This provides a convenient way to enjoy your digital music library or streaming services without a wired connection.
The amplifier measures 431mm wide, 344mm deep, and 83mm high. It weighs 9kg, so ensure your equipment rack or shelf has sufficient space and weight capacity to support it properly.
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