Item Type: Car Amplifier Material: Metal +electronic components Colour: Black Voltage: 12V Maximum Power: 1000W Impedance: 4 THD: Less than 0.1% Frequency Response: 30Hz~280KHz Signal To Noise Ratio: 89db Package List 1 x Car Amplifier 1Excellent Performance: Car subwoofer power amplifier with high efficiency, wide frequency, voltage, stable performance and high reliability. 2High Quality Material: Car amplifier is made of high quality metal and electronic components materials, high strength, high accuracy and durable. 3Professional Design: Strong heat dissipation power, compact size, professional manufacturing, exquisite workmanship. 4Multi Protection: Car audio power amplifier with current protection, overload protection, short circuit protection, have a long service time. 5Simple Installation: The installation is simple, no modification is required, convenient for using, save your time and energy.