The Z213 is multimedia speakers. Feel full bass. A down-facing subwoofer with a 4” driver provides a rich bass experience with these 2.1 speakers. The inclined design of Z213 directs sound right to your ears. Adjust the volume and power on and off with this 2.1 speaker system. Turn up the bass to your acoustic needs with a separate control knob at the back of the subwoofer.