Features: Enhances your car Sound experience with our Spare Tire Subwoofer Amplifier Volumes Controllers, designed to significantly boosts bass Performances for a fuller, more immersive sound. Featuring a user friendly Volumes adjustment function, this Small amplifier fits seamlessly into your spare tire space, preserving your vehicle's interior aesthetics. Ideal for car Sound enthusiasts and youthful drivers who enjoy music and seek upgraded in car sound experience, as well as audiophiles demanding high quality Sound active . Perfect for daily commutes, long road trips, or social gatherings, allowing you to enjoy dynamic music and create a lively atmosphere wherever you drive. Built with ABS material, it offers excellent heat resistance and shock absorption, ensuring reliable Performances across various driving conditions. suitable for multiple Sound inputs like and AUX, it's suitable for diverse vehicles and sound systems. Specifications: Material: ABS Length: about 14cm/5.51inch Package Includes: 1xCar Subwoofer Amplifier 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.