Car audio level converter for 12V systems and RCA connection1、Strong shielding, fast heat dissipation, anti-interference, high fidelity, improved sound purity, and can solve the impact sound of fast shutdown. 2、Convenient to plug in the line, equipped with a 15cm dedicated line, easy to access can be placed directly in the center console, without wiring everywhere, avoiding the chaotic wiring that may cause current and sound interference. 3、Delay switch line output, reduce the rush out to the power amplifier or subwoofer and eliminate the noise generated by the current interference of the power amplifier speaker when the host is turned on. 4、The audio transformer converts the high-level audio signal of 0-15V output by the host into a low-level audio signal of 0-5V without loss. 5、Processed with high-quality materials of aluminium lloy, wear-resistant, high-temperature resistant, and have a long service life.