In a traditional, passive audio system there is one amplifier. It drives two speakers, which will have a total of at least four drivers. In the Q Active system, each driver (there are three in each Q Active 200 speaker and four in each Q Active 400 speaker) is controlled by its own individual, specifically selected amplifier.
Using a total of six (or eight) discrete amplifiers, with a total of 280 (or 440) watts of power to drive the Q Active system means each individual driver receives its own carefully regulated amplification. As a result, Q Active is able to control each driver with accuracy and finesse which in short, means Q Active sounds bigger and more precise than you might think possible.