“To make power it takes power, I wanted to get the full potential out of my amplifiers and knew only the best battery’s would help me achieve that. I used other brands and had voltage issues, I knew of XS Powers reputation for quality. I gave them a shot and saw a huge improvement in voltage drop and my amplifiers made more power with 12 of the d1600’s compared to any other brand I had tried. By far the most powerful battery I have tried. Each of my 9000 watt rated amplifiers clamped over 12,000 and it was only able to do that with one brand supplying the voltage. XS POWER ”Rusty Flowers — Sparks Nevada — DC Audio.