Features:1. Adopt high power non-inductive resistor, good stability, support high temperature operation.2. Aluminum alloy cooling hole designed, which has wider contact with air and faster heat dissipation.3. Its housing uses standard security interfaces to eliminate inferior accessories.4. Two-color coil transformer, small size, high power, reject any short circuit and improve the utilization rate of PCB board.5. The black diamond capacitor has a sweet sound, which increases the musical expression of the device, greatly improves the overall sound effect.6. The powerful electric circulating coil ensures sufficient power when the power amplifier is working, and it is safer, more efficient and more stable when used.7. 3D surrounds you to immerse you in reality, giving you an excellent user experience.8. When the circuit is short-circuited, the fuse will automatically disconnect and the protective equipment.9. Can drive 8-12 inch woofer (dual voice coil speaker can also).Specifications:Condition: 100% Brand NewItem Type: Audio Power AmplifierMaterial: Aluminum alloyColor: As picture shownVoltage: 12 VMaximum power: 400 WOutput resistance: 4-8Frequency response: 20-20 KHzPeak power: 3800WSensitivity: 90dBApplication: Suitable for 12V car audio systemPackage list:1 x Audio Power Amplifier1 x manual1 x accessoryNoticed:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.