The PD series is one of our most advanced model specially designed for strong consumption occasions such as mobile performances, clubs, big concerts etc., combines the technologies of class AB and class D circuits, with DMOS power transistor using under class AB mode, greatly reduced the typical distortion from class EMI and class D amplifiers. By constantly adjusting the power voltage, the constant voltage drop on output transistors being separated from the output level, the PD series provides a trinal efficiency than that of class AB amplification, and holds the beautiful sound and durability of class AB amplifiers. Ranging from 800W to 1800W power per channel, the PD series includes 3 models selectable, designed with a full range protection of over-voltage, under-voltage, short circuit, overload, DC, thermal, soft start, volume fade-in after switching on and a VHF LIMITER.