But there's a better way!
Using an FET Transistor System, which already has overdrive and distortion capabilities is a better approach to maintain the genuine sound you get from an actual analog tube amp. An FET allows you to bring out the harmonic attributes, and break-up the distortion into a finer grit, the way a real tube does.
Now, your leads will sing richer and longer, and your rhythm will be more open and expressive than ever before. It all culminates into an overdrive that is superbly dynamic, with crisp precise clarity that lets players cut through a dense mix, without losing fat mid-range.