The car audios adapter with a control cable and knob offers precise control over your vehicle's sound system. This high to converter is easy to install and allows you to adjust the audio levels to suit your preferences. Connect the high-frequency output from your car stereo to the converter, and use the control knob to fine-tune the bass and overall sound quality. Features -Color:Assorted Color -Material: Plastic -Size:8.60X3.00X2.90cm/3.38X1.18X1.14in -Enhanced bass effect: the high to low converter for car audios enhances the bass effect, making your car audios system deliver more powerful bass for impactful music experience -Audio conversion: the adjustable car audios converter transforms the original car audios output into sturdy lowfrequency audio, enriching your music variety -Improved highfrequency quality: the high to low audio converter improves the highfrequency quality of the original car audios, making the music clearer and more detailed for a sturdy listening experience -Easy installation: the car audios adapter is simple and convenient to install, requiring no complex modification process, allowing you to easily enjoy the benefits of enhanced audio -Wide applicability: suitable for various car audios systems, whether it's a private car or a commercial vehicle, this product meets your music needs in different scenarios, providing sturdy audio enjoyment Package list: 1 audios converter