The PD4 series is a high-end speaker with two amplifiers for great performance. The low-frequency is controlled by a class-D amplifier, while the high-frequency is controlled by a class-AB amplifier. The PD4 is equipped with a built-in DSP with four preset modes for voice, PA, sub and monitor settings. In sub-mode, the speaker can be used as a top in combination with a subwoofer. This series is designed in a polypropylene construction which makes it sturdy yet light enough for mobile use. The perfect speaker for any DJ or live performer, but also as a monitor or club.