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Arcam HDA SA20 Integrated Amplifier


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Condition: New

Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Limited 2-5 year warranty.  More info

Only 1 left in stock.

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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:

  • Tick Class G amplification for impeccable sound and efficiency
  • Tick 80W of power per channel
  • Tick 5 analogue inputs including phono
  • Tick 3 digital inputs
  • Tick 32-bit DAC,Sabre ESS9038K2M
  • Tick Full I/P control
  • Tick Total harmonic distortion + noise = 0.003%
  • Tick Designed in the UK

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

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
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
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

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Part Exchange Available

Looking to upgrade and not sure what to do with your old gear? Trade-in with us and take the hassle out of finding a new home for your equipment.

We can take back any type of product we sell, from cables, to projectors, speakers, amplifiers, AV receivers, subwoofers and more.

Just fill in the form below and we'll get back to you.

Please note we don't purchase second hand goods for cash, we take trade-ins as part payment towards the purchase of new equipment.

PayPal Credit - Flexible Credit

Buy Now, Pay Later: Get 4 months 0% finance when you spend £99 or more. Look for the PayPal Credit button when making your purchase.

More information on PayPal Credit is available here.

Klarna Finance - Pay Monthly

Pay monthly plans for up to 48 months, available on purchases between £299 and £25,000.

0% ONIF6 6 Months
15.9% ONIB12-15.9 12 Months
15.9% ONIB24-15.9 24 Months
15.9% ONIB36-15.9 36 Months
15.9% ONIB48-15.9 48 Months

Choose your deposit amount

Deposit variable between 10% and 50%, subject to a minimum loan value of £250.


Please note: These finance quotes are for a single purchase of the product listed on this page, at the price shown. Adding additional products or quantities to your order, or using any vouchers or other discounts will result in changes to the quotes and available terms.

For further information please visit the finance page.


This item is in stock and ready to dispatch. Limited quantity available.

Please see our stock information page for more details on how we show stock information on this website.


This item is available dispatch Monday to Friday, subject to cut-off times and excluding public holidays. Next working day and weekend deliveries available.

Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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