Specification Model F15457Product Name Power AmplifierColor BlackMaterial Metal Electronic componentsVoltage 12VCurrent 80AMaximum power 1500 WRated power 300WImpedance 4ΩFrequency 50Hz 150HzSignal to noise ratio 91dbDimension 22 3x17 2cm L X W Amplifier use car audio system subwoofer speakerQty 1pc Features 1 High efficiency wide frequency2 Give you a wonderful in car entertainment 3 With current protection overload protection short circuit protection4 Durable in usePackage Included 1x Car Audio Amplifier BoardNote 1 We provide clear pictures measurements where possible Please check as much as possible to make sure the item is the one that you need 2 Please allow 0 5 1 inch difference due to manual measurement 1inch 2 54cm 3 The instruction is not included in the package Professional installation is Highly Recommended