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Key Features
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 Arcam’s best performing range of audio products yet – using the best quality components and engineering practices, the HDA range is designed and built to give you years of listening enjoyment.
The Arcam SA20 is an Integrated Amplifier that improves upon the performance of the previous Arcam A29. Class G amplification and 80W of power per channel contribute to impeccable sound and efficiency.
What is Class G?
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.A class of its own:
Both Channels, 8Ω, 20Hz—20kHz | 90W |
---|---|
Single Channel, 4Ω, At 1kHz | 180W |
Harmonic Distortion, 80% Power, 8Ω at 1kHz | 0.002% |
Input Sensitivity At 1kHz | 5mV |
Input Impedance | 47kΩ + 100pF |
Frequency Response (ref. RIAA curve) | 20Hz – 20kHz ± 1dB |
Signal/Noise Ratio (A-wtd) 50W, Ref. 5mV Input | 80dB |
Overload Margin, Ref. 5mV At 1kHz | 21dB |
Nominal Sensitivity | 1V |
Input Impedance | 10kΩ |
Maximum Input | 6Vrms |
Frequency Response | 20Hz – 20kHz ± 0.2dB |
Signal/Noise Ratio (A-wtd) 50W, ref. 1V Input | 106dB |
DAC | ESS9038K2M |
Frequency Response | 20Hz - 20kHz ± 0.05dB |
Total Harmonics Distortion + Noise | 0.0007% |
Signal/Noise Ratio (A-wtd) | 115dB |
Supported Sample Rates (Optical) | 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz |
Supported Sample Rates (Coaxial) | 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz |
Bit Depth | 16-bit – 24-bit |
Nominal Output Level | 630mV |
Output Impedance | 230Ω |
Maximum Output Level Into 600Ω | 5Vrms |
Output Impedance | 1Ω |
Load Range | 16Ω – 2kΩ |
Mains Voltage | 110–120V or 220–240V, 50–60Hz |
Maximum Power Consumption | 500W |
Dimensions (Including Feet, Control Knob & Speaker Terminals) | W433mm x H87mm x D323mm |
Weight (Net) | 9.2kg |
Weight (Gross) | 11.1kg |
Supplied Accessories | Mains leads Remote control 2 x AAA batteries |
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