The advanced filtered dual drivers will better separate each other's sound frequencies and will give you a smoother and more accurate sound frequency from the low end to the high end. An additional driver added to each party will give you the extra addition of sound quality you desire, as there are two drivers, each of which can be individually assigned to a specific frequency range, giving you the advantage of having no limit to the sound frequency in your audio. You'll also have a richer clearer spacious sound, which is created by the separation of the frequencies of the sound and the natural enhancement of your sound quality.