This audio converter is designed to improve the sound quality of your car's audio system. By converting high-frequency signals to low-frequency ones, it ensures that your subwoofers and amplifiers receive the good possible audio input. Its compact design makes it easy to install and use, providing a easy upgrade to your car's sound system. Features -Color:Multi -Material:ABS -Size:8.50X4.50X2.90cm/3.34X1.77X1.14in -Improved : converts highfrequency audio to lowfrequency, delivering durable sound quality. -Easy device integration: facilitates smooth connection between various audio devices. -Audio frequency delay: reduces and delays audio frequency for a richer, more . -Multiple format compatibility: supports a variety of audio formats to meet diverse user needs. -Quick and easy use: operation for fast and convenient setup Package list: 1pcs audio converter