"TARAMPS BASSKNOB Universal Bass knob Control Car Bass Controller Volume Regulator Knob Amplifier RCA Audio ON/Off for Amp, Durable, Volume Remote, Black, Small, Adjuster || Description :: The Bass Control is a remote volume control for amplifiers. Its main purpose is to control the Subwoofer volume in a practical way and in real-time, as it can be fixed on the vehicle's dashboard for easy access. With RCA audio inputs and outputs, it can be used with all models of head units and amplifiers with this type of connection. This is Taramps putting you in control. || * Amplifier level control || * Two independent channels || * RCA input and output || * Metal body || || * WEIGHT : 0.14lb (0,65g) || * EAN : 7898556848251 || Compatible with most head units/amplifier combinations. || This amplifier controller offers high-quality signal transmission with RCA input. || || The compact design could be installed anywhere, featuring a unique and minimalist look for better handling. || Authentic and High Quality Product."