- Class G amplification for impeccable sound and efficiency
- 90W of power per channel
- 5 analogue inputs including phono
- 3 digital inputs
What is it?
There are two frequent problems with hi-fi amplifiers. Class A, the traditional audiophile’s choice, uses a single power supply constantly running at full capacity, even when there’s no signal coming through. Great for reproducing those subtle details at low levels however struggles to provide extreme power when needed.
Class A/B, the most common amp class, switches between the two internal amplifiers, one for each half of the waveform. Far more efficient but often a recipe for crossover distortion, since those low-level details we crave can get lost within any mis-match between the two switching over.
Class G is essentially a hybrid amplifier, utilising Class A specifically for low-level signals, but when required switching in an additional power supply to power those larger sections of the waveform.
How does it work?
The engineers who designed the SA20 wanted it to provide the right amount of power at the right time, so your music always sounds exactly as it should. That’s why they chose a Class G amplifier, which uses Class A circuitry for low-level signals, then kicks in a higher-voltage power supply for more demanding dynamic peaks. And it does it without adding any crossover distortion or noise.
The SA20 gives you plenty of options for connecting music sources. There’s a Toslink optical connector and two digital coaxial inputs on the back of the chassis, along with three stereo analog RCA inputs. For vinyl enthusiasts, there’s a dedicated phono input for turntables with moving magnet phono cartridges.
What’s in the box?
- Arcam SA20 Class G Integrated Amplifier
- 6.5′ AC power cord
- Remote control
- 2 “AAA” batteries
- Handbook Manual
- “Thank You” Letter