Arcam SA-20 Integrated Amplifier
Given Arcam's
history of quality products and ground breaking innovations, it is not
surprising they have released the ultimate Class G amplifier. One that takes
the advantages of different amplifier type to produce the best sound at any
given moment. Come in store and see how clear they sound ALL the time.
Amplifier
Types
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.