This subwoofer volume adjuster is great for those who want to have complete control over their car's audio system. It allows you to easily adjust the bass levels to your liking, providing a great listening experience. Its compact and great design makes it easy to install and use, making it a must-have for any car audio enthusiast. Features -Color:Black -Material:PVC -Size:400.00X3.00X3.00cm/157.20X1.18X1.18in -Unique volume control: easily adjust the subwoofer volume to suit your preferences, enhancing your driving music experience -Convenient remote adjustment: manage the subwoofer volume remotely from your seat, providing ease of use and added convenience -great for any scenario: suitable for both urban and rural driving, allowing you to enjoy great music quality anytime -Effortless operation: the userfriendly ensures quick and easy volume adjustments, giving you full control -Reliable durability: constructed for longterm use, this controller is great and resistant to wear, ensuring consistent performance Package list: 2 amplifier regulators