The design of the HDA range draws upon all of Arcam’s experience as one of the UK’s most respected audio companies. To produce the Arcam SA20 integrated amplifier and the other best performing range of Arcam audio products yet, the HDA range is designed and built to give you years of listening enjoyment.
You see 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.
On one hand, 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.
On the other hand, 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.
Class G amplification for impeccable sound and efficiency
80W of power per channel
5 analogue inputs including phono
3 digital inputs
32-bit DAC,Sabre ESS9038K2M
Full I/P control
Total harmonic distortion + noise = 0.003%