Feature: 1. Excellent Function: Impedance converter is used to convert high frequency speaker output to low frequency RCA output, and connect to car power amplifier subwoofer signal input. 2. Wide Application: Superior high to low frequency converter is widely applied to car CD VCD DVD player without low frequency RCA output, better meeting your demands. 3. Convenient Using: The high level to low frequency converter is compact in design and easy to install by plug and play without modification, which is simple and convenient. 4. Practical Tool: For CD players without RCA output sockets, add a subwoofer, and use this high low speaker to receive the subwoofer input for better performance. 5. Long Service Life: The audio high to low converter has undergone extensive quality and safety testing to ensure long service life and strong durability. Specification: Item Type: High to Low Converter Material: ABS Applicable: For CD VCD DVD Player. Package List: 1 x High to Low Converter (Random Color)