Not for all amplifiers . (Note: Only Connect the 6-pin interface amplifiers). The design is simple and convenient, easy to install and use, the 6-pin crystal connector is inserted into the subwoofer sound interface (6-PIN), the other end is placed in the front of the car or where you want to put it. The bass control knob is about 3.8M/12.6FT long. It is usually installed in the idle position of the driver, allowing you to remotely adjust and control the volume of the subwoofer from the front seat. This amplifier remote control knob adopts pure copper core cable design and high-quality double-insulated PVC protective cable. The regulator is light and convenient, and there is a special power light to indicate the connection. This Amplifier Bass Volume Control Knob is specially designed to solve the problem that the main control panel of car audio and subwoofer volume synchronization, resulting in a single overall effect of some music, so that the music can achieve perfect effect.