Take full control of your car audio with this bass knob for amp, designed for seamless subwoofer volume adjustment right from the driver's seat. Featuring a long 5M (16.4FT) extension cable, it allows you to fine-tune low-frequency output without reaching for your amplifier—perfect for creating the ideal bass balance while on the road.

Engineered with a universal 4-pin interface, this bass knob is compatible with most car amplifiers, ensuring smooth communication between your head unit and subwoofer volume. Whether you're running a factory audio system or a custom aftermarket setup, it integrates effortlessly for precise sound control.

The cable is built with a pure copper core and double-layer PVC insulation for clean, uninterrupted signal transmission. Its durable construction resists heat, UV rays, and everyday wear, delivering reliable performance in all driving conditions. Installation is quick and tool-free—just plug the crystal connector into your amplifier's remote bass port and mount the knob in a convenient location on your dashboard, center console, or underdash panel.

Packaged in recyclable materials to reduce environmental impact, this bass control knob is backed by responsive customer support to assist with installation or compatibility questions. With its blend of durability, ease of use, and universal fit, it's the ideal upgrade for anyone seeking real-time, in-car bass control.