Native language or not, I think that was a better description than I could have given.
Many moons ago, I had the GK 800RB this amp is supposed to mimic. To my ears, based on this video, it sounds exactly like what I remember. For me, it was all about clarity and that attack.
The thing about it that still appeals to me is how you can always make a brighter cleaner tone into something darker and dirtier but you can’t seem to go the other way; turning a dark and dirty tone into something bright and clean.
One thing I did to get a better idea of the differences was to pull up this video of the Fender Rumble 800HD at the same time and bounce back and forth between them.