Hello,
I remind me my old Zoom G9 2tt, there was a tone parameter in stack section, in addition to the 6 bands eq.
There was no simple 3 bands eq, but only a 6 bands graphic eq.
The tone parameter in addition to the 6 bands eq made it easy to obtain the sound you wanted and this opened up the scope of sound possibilities.
For exemple, this made it easy to obtain a cristal or very acute sound, even if i used a humbucker.