1. Material: copper core 2. Voltage: 12V 3. Stable performance 4. Applicable to various car models 5. Convert car stereo speaker output to RCA output 6. Convert high-frequency output to low-frequency output to achieve true channel separation and adjustable input sensitivity 7. Used for hosts without low-frequency (RCA) output (such as cassette players/card machines/VCD/DVD, etc.) to convert the speaker's high-frequency output into low-frequency (RCA) output to the car amplifier or subwoofer
