I won‘t get into nuances of whether this is an OD a distortion or whatever. What it does well is provide 5 flavors of drive ranging from light and open to tight and compressed, with a good ability to control tone as well. I use it into a Catalinbread 5f6 and it drives that nicely. Going straight into a clean Blackstar 5 watt, it also shines. It won‘t replace my Iron Horse which does a searing RAT impression. But I could pretty much live with that, the Ages, and clean boost.