Benchmark power and uncompromising performance
The Arcam SA45 represents the pinnacle of the Radia series, embodying the British brand’s expertise and sonic sophistication in an audiophile-grade integrated amplifier. Featuring innovative fifth-generation Class G amplification , the SA45 delivers 180W per channel into 8Ω and up to 300W into 4Ω , offering dynamic control and impeccable linearity even with high-end speakers.
The digital heart is entrusted to an ESS Hyperstream IV DAC in balanced configuration, capable of handling signals up to 32 bit/384 kHz and DSD256 , delivering a pure, detailed and natural sound. The power supply is based on a large linear toroidal transformer , supported by a six-layer layout that minimizes interference and background noise.
The SA45 is a true all-in-one music center: it supports Apple AirPlay 2, Google Cast, Spotify Connect, Tidal Connect, Qobuz Connect , and is Roon Ready , offering high-resolution streaming from any source. The wireless section integrates Wi-Fi 6 and Bluetooth 5.4 with Snapdragon Sound and Auracast , while physical connectivity includes HDMI eARC, optical and coaxial inputs, balanced XLR, RCA, and MM/MC phono , as well as a dual subwoofer output for precise bass control.

Dirac Live acoustic calibration optimizes the sound to your listening environment, ensuring a smooth and balanced response. On the front, a large 8.8" color display shows album art, metadata, and settings in real time, underscoring the modern and refined approach of the new generation Radia.
With its understated design and quality finish, the Arcam SA45 combines power, elegance and precision engineering , becoming the perfect heart of any high-end hi-fi system, capable of satisfying the most demanding enthusiasts and sound professionals.
Technical features
| Output power |
2 × 180 W into 8 Ω / 2 × 300 W into 4 Ω |
| Amplification technology |
G-Class (5th generation) |
| DAC
|
ESS Hyperstream IV, 32-bit/384 kHz, DSD256 |
| Environmental correction |
Integrated Dirac Live |
| Streaming |
Roon Ready, AirPlay 2, Chromecast, Spotify, Tidal, Qobuz Connect |
| Wireless connectivity |
Wi-Fi 6 (802.11 a/b/g/n/ac/ax), Bluetooth 5.4 with Snapdragon Sound and Auracast |
| Analog inputs |
3 × RCA, 1 × XLR, 1 × phono MM/MC |
| Digital inputs |
2 × optical, 2 × coaxial, 1 × HDMI eARC |
| Exits |
2 × subwoofer pre-out, 3.5mm headphone output |
| Frequency response |
20 Hz – 20 kHz (±0.2 dB) |
| THD |
0.002% |
| Display |
8.8″ color LCD |
| Dimensions (L × W × H) |
432 × 390 × 140 mm |
| Weight |
17 kg |