Report "all three 100% up, it only produces weak power- maybe a cpl hundred watts. Of course at that point, not only does it sound horrible, but it's nothing near as loud as it should be. When the frequency and EQ knobs are both all the way down... the gain doesn't provide any difference in power. With these three controls turned down, you only feel current going through subs, but no sound, and then when you get close to the halfway point of turning them all up, it kicks on somewhat, but never reaches full potential..... can anyone help please?! email ~ [email protected]"