It does exactly what it's supposed to as a transparent overdrive. You can leave it on with the drive down as a clean boost or you can go from light overdrive all the way to blistering, deep-voiced with the gain toggle. Hi-cut switch is hard to access. Have a small object on hand like a pin or a small allen key. Silent footswitch. Beautiful sonically speaking. Best overdrive sound I've heard. It's a Marshall Bluesbreaker on steroids.