Features: <br> <br>This audio amplifier is used for car CD VCD DVD player without low frequency RCA output. <br>High-frequency speaker output will be converted to low-frequency RCA output, connect the car amplifier subwoofer signal input. <br>Compact design for easy plug & play installation. <br>For CD machine without RCA output seat to add a subwoofer and use this high to low speakers to receive the subwoofer input. <br>Wiring diagram is attached on the back of the package, convenient to install. <br> <br>Specifications: <br>Condition: 100% Brand New <br>Material: Plastic, Electric Components <br>Color: transparent <br>Size(L * W * H): 5.5 * 3.7 * 2.5cm / 2.2 * 1.5 * 1.0in <br>Package Weight: approx.46g <br> <br>Package List: <br>1 * Audio CD Amplifier<br>1、This audio amplifier is used for car CD VCD DVD player without low frequency RCA output <br>2、High-frequency speaker output will be converted to low-frequency RCA output, connect the car amplifier subwoofer signal input <br>3、Compact design for easy plug & play installation <br>4、For CD machine without RCA output seat to add a subwoofer and use this high to low speakers to receive the subwoofer input <br>5、Wiring diagram is attached on the back of the package, convenient to install