Feature: 1. 600W subwoofer amplifier can effectively improve the sound quality of car audio and bring you a nice experience. 2. It can help you amplify the weak signal of the audio source or pre-amplifier without changing the sound quality. 3. The powerful electric circulating coil ensures sufficient power for operation, which is more stable and efficient. 4. Built-in current conservation, overload conservation, short circuit conservation, etc., making it safer to use. 5. Premium aluminum alloy housing, exquisite and beautiful, strong shock resistance, quick heat dissipation, and guaranteed quality. Specification: Features: 600W subwoofer amplifier can effectively improve the sound quality of car audio and bring you a nice experience. It can help you amplify the weak signal of the audio source or pre-amplifier without changing the sound quality. The powerful electric circulating coil ensures sufficient power for operation, which is more stable and efficient. Built-in current conservation, overload conservation, short circuit conservation, etc., making it safer to use. Premium aluminum alloy housing, exquisite and beautiful, strong shock resistance, quick heat dissipation, and guaranteed quality. Specifications: Color: Black Material: Aluminum Alloy Voltage: 12.0V Max. Power: 600W Impedance: 4Ω Sensitivity: 75-90dB Distortion: 0.01% Item Size: 170 * 155mm/ 6.7 * 6.1in Package Size: 180 * 160 * 60mm/ 7.1 * 6.3 * 2.4in Package Weight: 650g/ 22.9oz Packing List: 1 * Power Amplifier Board Package List: 1 * Power Amplifier Board