Often class G would be used in portable headphone amps. On rechargeable lithium battery these little ones can last upto 30 hours of continuous listening. It has advantages over A/B class almost on every aspect you can ever think of including clarity, noise floor and certainly efficiency. Call it improved class D.
What is a class G amp ?
Looking at a arcam 600 and specs state that it has a class G amp, any info on this this would be very helpfull, also, how does the class g amp compare to amps in other receivers ? thanks