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Comparison Arcam HDA SA20 vs Arcam HDA SA10

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Arcam HDA SA20
Arcam HDA SA10
Arcam HDA SA20Arcam HDA SA10
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Main
DAC: ESS Saber 9038 K2M
DAC: ESS Saber 9016 K2M
Device typeintegrated amplifierintegrated amplifier
Element basetransistortransistor
Amplifier parameters
Number of channels22
Power per channel (8Ω)80 W50 W
Harmonic distortion0.003 %
Connectors
Inputs
Phono
coaxial S/P-DIF /2/
optical
RS-232
Phono
coaxial S/P-DIF /2/
optical
RS-232
RCA3 pairs3 pairs
Outputs
Pre-Amp
Pre-Amp
For acoustics2 шт2 шт
On headphones3.5 mm (mini-Jack)3.5 mm (mini-Jack)
Front panel
display
audio input jack /mini-Jack/
headphone output
display
audio input jack /mini-Jack/
headphone output
Features
Adjustments
level adjustment
level adjustment
More features
ММ phono stage
ММ phono stage
General
Remote control
PSUinternalinternal
Weight10.6 kg10.2 kg
Color
Added to E-Catalogmay 2018may 2018

Power per channel (8Ω)

The nominal sound power output by the amplifier per channel when operating with a load having a dynamic resistance (impedance) of 8 ohms. In our catalog, this parameter is indicated for the mode when all channels of the amplifier work under load (see "Number of channels"); in the presence of unused channels, the rated power may be slightly higher, but this mode cannot be called standard.

Rated power can be simply described as the highest output signal power at which the amplifier is able to work stably for a long time (at least an hour) without negative consequences. These are average figures, because in fact, the audio signal is by definition unstable, and individual level jumps can significantly exceed the rated power. However, it is she who is the main basis for assessing the overall loudness of the sound.

This indicator also determines which speakers can be connected to the amplifier: their rated power should not be lower than that of the amplifier.

According to the laws of electrodynamics, with different dynamic load resistance, the output power of the amplifier will also be different. In modern speakers, the standard values \u200b\u200bare 8, 6, 4 and 2 Ohms, and power levels are indicated for them.

Harmonic distortion

This indicator describes the amount of non-linear distortion introduced by the amplifier into the processed signal. Such distortions are not necessarily perceived as extraneous noise, but they degrade the quality of the sound anyway — for example, they can make it more deaf. It is almost impossible to avoid them, but it can be reduced to levels inaudible to the human ear.

As a result, the harmonic distortion factor (harmonics) is one of the main parameters describing the overall sound quality in Hi-Fi and Hi-End amplifiers. The lower it is, the clearer the sound. Hundredths of a percent are considered a good indicator for modern amplifiers, thousandths and below are excellent. The exceptions are tube and hybrid models, for which rather high harmonic coefficients are allowed; see "Element base" for more details.
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