Current Dumping Technology
As you may already know, Peter Walker, founder of Quad was an innovator of both hi-fi electronics and loudspeakers - all to recreate a life-like performance when enjoying music in your living room.
In pursuing this, many new technolgical advancements and patents have been registered, including Current Dumping technology which creates a very stable, high-power, low-noise amplifier.
One of the few truly innovative amplifier topologies, it is essentially a combination of two amplifiers to give the best of both in each channel. The current dumping circuit like the Quad QMP, or the Artera Stereo Amplifier consists of a very high quality class A low-power amp which provides the details of the signal, while a high-power current dumping section provides the grip to keep the speakers under control. These two amplifier circuits are combined with a precision network to perfectly impose the finesse of the class A output onto the power of the current dumper.
This technology eliminates the problems of crossover distortion, quiescent current adjustment, thermal tracking and transistor matching. There are no internal adjustments or alignments and the choice of power transistor types is less restrictive.