Features: 1.Use a transformer to separate some noise. 2.Car audio high frequency to low frequency output, output sensitivity is adjustable. 3.Transparent shell design, stylish and exquisite workmanship. 4.For mainframes without low frequency (RCA) output, such as cassette player/card reader/CD/VCD/DVD, etc. 5.Converts the high frequency output of the speaker to a low frequency (RCA) output for use as a car power amplifier or subwoofer signal input. Specification: Features: Use a transformer to separate some noise. Car audio high frequency to low frequency output, output sensitivity is adjustable. Transparent shell design, stylish and exquisite workmanship. Designed for the original car without audio output. For mainframes without low frequency (RCA) output, such as cassette player/card reader/CD/VCD/DVD, etc. Converts the high frequency output of the speaker to a low frequency (RCA) output for use as a car power amplifier or subwoofer signal input. Specification: Condition: 100% Brand New Item Type: Audio Converter Color: Shown as Picture Material: ABS Package List: 1 x Audio Converter Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. PackageList: