Arcam HDA SA20

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.

  • 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%
  • Continuous power output (20Hz—20kHz at 0.5% THD), per channel
  • Both channels, 8Ω, 20Hz—20kHz 90W
  • Single channel, 4Ω, at 1kHz 180W
  • Harmonic distortion, 80% power, 8Ω at 1kHz 0.002%
  • Analogue Inputs
  • Phono (MM) cartridge:
  • 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
  • Line Inputs:
  • 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
  • Digital Inputs
  • 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
  • Coaxial 32kHz, 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
  • Bit depth 16-bit – 24-bit
  • Pre-amplifier output
  • Nominal output level 630mV
  • Output impedance 230Ω
  • Headphone output
  • Maximum output level into 600Ω 5Vrms
  • Output impedance 1Ω
  • Load range 16Ω – 2kΩ
  • General
  • Mains voltage 110–120V or 220–240V, 50–60Hz
  • Maximum power consumption 500W
  • Dimensions W x H x D (including feet, control
  • knob and speaker terminals)
  • 433x87x323mm
  • Weight (net) 9.2kg
  • Weight (gross) 11.1kg
  • Supplied accessories Mains leads
  • Remote control
  • 2 x AAA batteries

Category: Amplifires

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