Reliable Performance: This car audio converter adopts a dual-channel independent high-to-low design and uses noise-reducing filter capacitors, with stable performance and high precision. Separating the subwoofer amplifier input from the amplifier speaker output helps adjust the amplifier's power output, eliminates current noise, and enhances bass. | Function: This high-frequency to low-frequency output converter is used for hosts without low-frequency (RCA) output (cassette players, card machines, CD/VCD/DVD, etc.) to convert the speaker output high-frequency to low-frequency output. It used to connect car high-power amplifier or subwoofer signal input. | Easy to Use: This converter is compact and mini for easy plug-and-play installation. When connecting the line, the green wire is connected to the negative terminal of the left channel. The yellow wire connects to the left channel positive. The gray wire connects to the negative terminal of the right channel. The purple wire connects to the positive terminal of the right channel. The black wire is grounded. | Application: This adapter is suitable for machines whose original car player does not have audio output. It is used to install a power amplifier and subwoofer, and convert the high-frequency speaker signal output by the CD into the low-frequency audio signal of the power amplifier or subwoofer. | Product Appearance: This output converter adopts a transparent shell design, exquisite workmanship, insulated and moisture-proof, and not easy to break. If you have any question on use, kindly contact us at any time directly, we will solve the problem for you within 24 hours on weekdays.