The Tube Zone is the most flexible MI Audio overdrive pedal. It features 4 clipping stages for tube amp-like response and tone and the MI Audio Tube Zone Overdrive pedal works comfortably as a low or high gain device.
There are so many tone sculpting options in this box, if you stack this with other OD or boosts you can get some incredible results. By itself it's a lot to take in for all its options, but once you settle on a tone you're going to pretty much only going to be needing to change the volume (this pedal can get so loud it will wreck things, so be careful) or the gain.
Excellent tool for finding your voice.