In Dashboard Amplifier Control Knob General Remote Volumes & Bass Adjustment Simple Connection for Auto Sound D7YA Features: OOTDTY your Auto Sound experience with this Bass Knob, General car amplifier Volumes control designed for precise bass and Volumes adjustments. This knob features simple in/out for easy installation, allowing you to adjust Gains and frequency without the need for additional wiringperfect for audiophiles seeking best sound quality. Suitable for music enthusiasts and professional sound producers who demand convenient control over their car's Sound while on the move. Whether cruising on a long road trip or your favorite tracks during daily commutes, this bass knob ensures your Sound is tailored to your preferences. This Bass Knob not only complements modern auto interiors with its design but also offer a and responsive for fast Sound adjustments, making it essential accessory for any Auto Sound upgrades. Specifications: Material: plastic Head size: about 5x7cm/1.97x2.76inch Package Includes: 1xCar Amplifier Gains Adjuster Note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the difference between different monitors, the picture may not reflect the actual color of the item. _x000D_ _x000D_ _x000D_