This 2x 1800W RMS amplifier out of the PDD series is a milestone on digital amplifiers by adopting the Class D technology. Cost can compare with Class A/B amplifiers but the power, reliability and efficiency are much higher and better than switching mode amplifiers. They are your ideal devices in all kinds of pro-audio field use even public use. It also symbolizes the trend of the professional amplifiers future. Due to the low weight and the 1U format this amplifier is very easy to transport and saves space! High Power, outstanding quality and reliability Stereo/mono mode operation Peak level LEDs Balanced XLR inputs NL-4 speaker outputs High efficient and reliable switching power supply with power factor correction (PFC) technology Soft start , clip limiter, power limiter, thermal cut, DC, AC, short-circuit protection Innovative aluminium heatsink Upgraded cooling fan with magnetic suspension technology and low noise You have a question about this product? Fill in this form, we'll answer your question as soon as possible.