Features: 1. Wide Range of Applications: Our car bass controller knobs are extensively used in car o systems and offer universal fitment for most vehicles. 2. Volume Adjuster: This car bass controller can be used to adjust amplifier power levels, stereo, equalizer, or crossover volume from the dashboard or other locations. 3. Provide More Convenience: You can quickly control or adjust bass gain, volume, and level from the front seat or a remote location using this bass controller. 4. Easy to Operate: Control the bass by adjusting gain or frequency through rotating the controller knob, offering a simple and efficient operation. 5. Enjoy Different Music: By installing a subwoofer level control or balancing multiple amplifiers, various frequency responses can be achieved, allowing for a more diverse listening experience. Specification: Item Type: Car Bass Control Knob Product Application: Universal Fitment