The Arcam SA45 is a premium streaming integrated amplifier that epitomizes the fusion of high-fidelity audio performance with modern streaming capabilities. Unveiled at High End Munich 2024, the SA45 stands as the flagship model in Arcam's Radia series, reflecting the company's commitment to delivering exceptional sound quality through innovative engineering.
Design and Build
Crafted in Cambridge, UK, the SA45 draws inspiration from Arcam's esteemed A49 integrated amplifier. It features fully balanced digital and analogue audio paths, ensuring minimal interference and optimal signal integrity. The amplifier's chassis houses a new linear toroidal power supply, designed to reduce noise and enhance overall performance. A notable aesthetic feature is its 8.8-inch high-resolution display, which prominently showcases album artwork and metadata, providing users with a visually engaging experience from a distance.
Amplification and Performance
At the heart of the SA45 lies Arcam's fifth-generation Class G amplification technology, delivering 180 watts per channel into 8 ohms and 300 watts into 4 ohms. Class G amplification utilizes multiple power supplies, engaging additional reserves only when required, thereby enhancing efficiency without compromising sound quality. This design ensures that the amplifier operates in pure Class A mode during low-level signals, minimizing crossover distortion and preserving the nuances of the audio.
Streaming Capabilities
The SA45 integrates a newly developed streaming platform that supports a comprehensive range of services, including Apple AirPlay 2, Google Chromecast, Spotify Connect, Tidal Connect, and is Roon Ready. Connectivity options encompass both Ethernet and Wi-Fi, facilitating seamless integration into various home network configurations. The inclusion of two-way aptX Adaptive Bluetooth allows for high-quality wireless audio streaming to and from compatible devices, offering flexibility for users who prefer wireless setups.
Inputs and Outputs
The amplifier is equipped with a versatile array of inputs and outputs to accommodate diverse audio sources:
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Digital Inputs: Two optical (TOSLINK), two coaxial, and an HDMI eARC input for direct connection to televisions and other digital sources.
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Analogue Inputs: Three single-ended line-level inputs, one set of balanced inputs, and a switchable MM/MC phono stage for vinyl enthusiasts.
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Outputs: Dual subwoofer outputs, available in both single-ended and balanced variants, allowing for flexible subwoofer integration.
Room Correction and Calibration
To optimize audio performance within various listening environments, the SA45 incorporates Dirac Live Room Correction with Bass Control. This feature enables precise calibration of the audio output to compensate for room acoustics, ensuring a balanced and immersive listening experience. A measurement microphone is included to facilitate this calibration process, allowing users to tailor the sound to their specific space.
User Interface and Control
The SA45's user interface is designed for intuitive operation, with the large front-panel display providing clear navigation through settings and playback information. While the display is not touchscreen-enabled, control is achieved via the volume and source selectors flanking the screen. Additionally, the amplifier can be configured and managed using the ARCAM Radia App, which offers features such as presets, internet radio, and podcast access.
Conclusion
The Arcam SA45 streaming integrated amplifier represents a harmonious blend of traditional high-fidelity principles and contemporary digital convenience. Its robust amplification, comprehensive streaming support, and advanced room correction capabilities position it as a formidable contender in the high-end audio market. For audiophiles seeking an all-in-one solution that does not compromise on performance or versatility, the SA45 warrants serious consideration.