Leave the output gains open, the speakers isn't going to take more than it needs. . . if it is doing so you will see the clip lights on the front of your amp lighting up. Just because the amp is capable of 1000watts, doesn't mean it's going to push that power unless of course you are just riding every single slider at 100%. Realize that the speakers are 250 watts and the amp is 500 a side, assuming that's 8ohm, you will be fine.