1. 4-channel audio high to low, fast heat dissipation, anti-interference, strong shielding, can isolate some noise, high fidelity. 2. Standard connector, equipped with 15CM dedicated line, to avoid current noise interference caused by disorderly wiring. 3. Convert the loudspeaker output high frequency to low frequency () output, connect the car power amplifier or subwoofer signal output. 4. Delay switch line output, reduce the impact of the power amplifier or subwoofer, thereby eliminating the current interference of the power amplifier speaker when the host is turned on. 5. Used for hosts without low frequency () output, such as cassette player//CD/VCD/DVD, etc. Item Type: Audio Converter Voltage: 12V Maximum Power: 50W Channel: 4 CH Colour:Black Material:iron Package Contents: 1 x Audio Converter 1 Cable Only the above package content, other products are not included. Note: Light reflection 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.