I am posting a high gain video of this amp later today.

The M9/M13 has more effects. This amp has many of the same effects though, and you can get a floorboard with it, so you can switch between presets and control parameters with the foot pedal. This amp is a complete solution, where as the M9/M13 is great for those already have an amp and just want a bunch of effects.

The amp sounds are created by combining Line 6 technology with Bogner tube amp design technology - don't ask me exactly how though, because I have no idea.