Feature 1Adopt highpower noninductive resistance, good stability, support high temperature working. 2Aluminum alloy cooling hole designed, which has wider contact with the air and faster heat dissipation. 3Its housing uses standard safety interfaces to eliminate inferior accessories. 4Twocolor coil transformer, small size, high power, reject all short circuit and improve the utilization rate of PCB board. 5The black diamond capacitor has a mellow sound, which increases the musical expression of the device, greatly enhances the overall sound effect. 6Powerful electric circulating coil ensures sufficient power when the power amplifier is in operation, and it is safer, more efficient and more stable when used. 73D surrounds you to immerse yourself in reality, gives you great using experience. 8When the circuit is shorted, the fuse will automatically disconnect and protective equipment. 9Can push 812 inch woofer (double voice coil speaker can also be).Condition: Brand NewItem Type: Audio Power AmplifierMaterial: Aluminum AlloyColor: As picture shownVoltage: 12VMaximum Power: 400WOutput Resistance: 4-8Frequency Response: 20-20KHzPeak Power: 3800WSensibility: 90dBApplication: Suitable for 12V car audio system .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Audio Power Amplifier1 x Manual1 x AccessoryNote