S̷͖͑m̵͎͂á̵̺s̸͚̈́h̴̬̑
Hack
I think of it as less microphonics transfering with the presence/treble/gain. Because my amp is very much like this. I describe it as clarityyou did say it had “grind” which sort of answers my question, but when someone describes zero treble-fizz for a guitar sound I get confused. Maybe it’s just direct mic’d cabs, but I associate heavily distorted guitar tones as having a certain level of treble/fizz at least on extreme settings. It’s nice to be able to dial them out but some amps just don’t have enough high end available.