Dual Zone Volume Control Tired of taking your eyes off the water to dig through poorly-designed head unit menus just to adjust the balance between your in-boat marine speakers and tower speakers? So is Roswell. That’s why Roswell created the Dual Zone Volume Control. With this elegant analog solution, you can enhance your system’s performance by conveniently controlling your in-boat marine speakers and tower speakers volumes independently and on-the-fly. Features: * Independent volume control for 2-zone setups * Dual logarithmic pots for an intuitive response * Simple installation     * Connects with 6 gold-plated female RCA connectors * Quad-shielded cable for the ultimate in noise rejection