1.HID series amplifier are advanced high quality efficency lightweight professional amplifier. Suitable for touring or fixed in theatre sports center night club ect. 2.HID series high quality and steady function could meet your any request. 3.Delast start DG protect over watts protect heat protcet clip could adjust the each channel's power output sperately. Could control the temperature antomaticly. 4.Have 1 style's 4 channel product each channel could adjusted from 500W to 400W.Each amplifier have 4 grade output watts for choose. 5.HID series are switch mould amplifier,the height of all the amplifier are 2U, the weight are less than 12.5KG.