5800W high-power car amplifier can effectively improve sound quality of car audio and bring a nice experience to users. It can amplify weak signal from audio source or pre-amplifier, without changing sound quality, and promote sound of speaker. Premium aluminum alloy housing, exquisite and beautiful, high-end texture, strong shock resistance. With multiple cooling holes, quick heat dissipation and nice stability. The powerful electric circulating coil ensures sufficient power during operation, and it is , more efficient and more stable. Compact and ultra-thin, easy to install. Four-channel high-power design meets needs of most users. Channel: 4 Voltage: 12V Max. Power: 4 x 50W Impedance: 4 Signal-to-Noise Ratio(): 90dB Frequency Response: 10Hz-30KHz The printing/appearance from batch to batch, but it will not affect use; the actual product may have color difference due to different light or display. Colour:Black Material:Aluminum Alloy Package Contents: 1 x Car Amplifier Only above package content, other products are not included. Note: Light reflection and different displays may cause color of item in picture a little different from real thing. The measurement allowed error is +/- 1-3cm.