Most lightning damage to electronic equipment is caused through induction. With induction, lightning does not strike the speaker line or electronic equipment directly, rather, it propels, or induces, large voltages of electrical energy into the system. Equipment connected to long speaker lines are especially susceptible to damage from induction. Therefore, Grommes~Precision designed the SLS to prevent speaker line lightning surges from harming electronic equipment connected to it. Although not much can withstand the rare direct strike, the SLS can help protect electronic equipment from the much more likely induced strike. And, with over a half-century of experience in the business, Grommes~Precision’s SLS is made in America, and is backed by Grommes~Precision’s unbeatable expertise and Assurance Policy: a 5 Year Warranty and 30 Day Money Back Guarantee.