The mk50ii on the other hand is 3d, it is refined, it is an amp that like to have both gain stages activated (you can dial the second gain stage pretty low, but it adds dimension and bottom end to the tone). The actual overdrive amount is done with the volume control on the guitar. From clean to kill - touch sensitivity, an overused term, but rest assured that i have tried a lot of amps and this one has it!
The clean channel sounds a bit flat - i add a klon type pedal and it lives up.
The amp is a beast for performing, because everything is so manageable from the guitar and your pedal. Clean/crunch/overdrive and two preset volumelevels on pedal. It is very direct sounding, you can sort of feel how immidiate it responds when you hit the guitar - bam its there. It really is a masterpiece of an amp and It is my favorite.