High efficiency,wide frequency Give you a wonderful in-car entertainment. With current protection,overload protection,short circuit protection Durable in use Specification: Product Name: Power Amplifier Voltage: 12V Current: 80A Maximum power: 1500 W Rated power: 300W Impedance: 4Omega Frequency: 50Hz-150Hz Signal to noise ratio: 91db Dimension: 21.3x17cm ( L x W ) Amplifier use:car audio system/subwoofer speaker colour: black Material: metal Package Contents: 1 x Car Audio Amplifier Board With Accessories Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.