Description: Quality Sound: Professional power amplifier, distortion free, can provide stable and excellent audio performance, letting you enjoy a high quality music experience. With volume adjustment knob, easy to operate. High Power Output: 2 Channel digital audio amplifier, 2x 550W powerful audio output, Mono/Stereo switchable, which can bring shocking sound effects to the audience whether in large scale stage performances or outdoor activities. Good Heat Dissipation: The panel of audio power amplifier has a large area opening design, multiple heat dissipation vents and the internal circulation cooling system protects the chip temperature from stability. Intelligent Protection: The audio amp with multi intelligent protection, overvoltage/undervoltage protection, overheating protection, current protection, etc. 4.5cm thickness, thin and light body, is fashionable and beautiful, easy to carry. Wide Applications: The amplifier is suitable for home theater, KTV, outdoor performances, bars, wedding activities, stage performances, etc. Specification: Product size: 48cmx16.8cmx4.5cm/18.90inchx6.61inchx1.77inch Material: Metal Distortion: -to-noise ratio: 112dBFrequency response: 20HZ-20KHZ Damping coefficient: >1000 Conversion rate: 50V/us Input impedance: 30K balanced Input sensitivity: 0.775V DC : Working voltage: 90V-264V10%50HzPower factor:>0.95@>500W Maximum output voltage and current: 100V peak/50A peak Package Includes: 1 Power Amplifier 1 EU Adapter Note: Please allow slightly errors due to manual measurement and different monitors.