•ARCAM SA20 Class G Integrated Amplifier 規格表

SA20

Class G Integrated Amplifier

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.

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.

SA20 Front Panel Connections and Controls

VOLUME CONTROL
AUX INPUT
POWER INDICATOR AND POWER SWITCH
POWER INDICATOR AND POWER
SWITCH
MUTE
INPUT SELECT

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