Apologies @boomertech, but I cannot UN-recommend this box enough for this or any other purpose. It sounds okay enough in over-easy mode... But not great as a peak limiter. The main issue is reliability: I've had two different ones fail on me in different locations. The lights go haywire, the compressor works intermittently, then stops working altogether. Not to mention you don't need a stereo compressor, and you don't want a bottom of the barrel budget device like this. DBX does make some good rackmount comrpessors, but this isn't one of them.
If you can find a used DBX 160x (or even better, a 160a) in your price range, there's your guy.