Description: 【Compact Size】: The High to Low Audio Converter measures 3cmx5.5cmx3.5cm, making it a compact and convenient addition to your car audio system. 【Versatile Use】: This converter is designed for use with hosts that do not have low frequency (RCA) output such as cassette players, card machines, CD/VCD/DVD players etc., converting high frequencies speaker output into low frequency (RCA) output. 【Suitable for Car Audio Systems】: It serves as an input signal for car power amplifier or subwoofers, enhancing the overall sound quality of your vehicle's audio system. 【Material】: Made from premium material, this converter is built to withstand regular use while maintaining its performance and sturdy. 【Function】: Eliminate current noise of sound and enhance bass sound. Size Chart: 3cmx5.5cmx3.5cm/1.18inchx2.17inchx1.38inch Package Includes: 1 High to Low Speaker Impedance Converter Note: Please allow slightly errors 1-2cm differences due to manual measurement.