I have a love hate relationship with compressors. This one is very good and offers functions most compressors don't. You can tweak the input and output levels to drive an amp if you desire. I have used it to reduce the input level going to the amp. I've never liked using compressors but this one is as close to invisible as any I've ever used. Still I prefer to not have it on the board. It has a slight "lag" when clicking it on or off and that's the reason it's not a 5 star product.