Description Are you looking for a professional, yet reasonable rca bass knob? Are you in search of a sturdy, trustworthy accessory that can do multiple jobs at once? If yes, look no further! Our amplifier level controller must meet your needs, this rca bass knob is one of the best choices for you. Features -Color:As Shown -Material:Copper -Size:25.00X5.50X2.30cm/9.82X2.16X0.90in - Versatile Compatibility: Equipped with 2 RCA inputs and 2 RCA outputs, this audio adjuster is compatible with a wide range of car audio devices. - Adjustable Volume: With the ability to adjust volume, this device provides a better audio experience for drivers and passengers. - Easy to Use: No professional installation is required, making it simple and convenient for anyone to use. - Compact and Portable: Its small and lightweight design makes it easy to carry and store. - Made with durable and reliable materials, this audio adjuster is built to last.Package list: 1 x controller 2 x screws