Convenient Volume Control: This bass control knob with a 16ft extension cable allows you to easily adjust the subwoofer volume from the driver's seat.
Easy Installation: The bass control knob is easy to install and use by plugging the 4-pin crystal connector into the sound interface of the subwoofer and the other end into the bass control knob.
Durable Construction: Featuring a pure copper core cable and high-quality insulated PVC protective wires for long-lasting performance.
Universal Compatibility: Designed to sync the car audio main control board and subwoofer volume for enhanced audio experience.
Quality Assurance: Backed by a 100% quality guarantee for your peace of mind.