I went with a “set and forget’ approach as I too don’t want to be messing around more than playing. I spent about 5 mins adjusting the trims, but actually found the setting I liked within 2 mins. I know the bass well so it wasn’t hard for me to find it (whilst having the treble and bass slightly boosted).
The mid point on the internal trims is at 12 o clock according to the manual, both dials came set at 10 o clock, I’m not sure if that’s deliberate. John was a great guy to email, I had some questions, so I’m sure he’ll answer the factory preset question for you.
Now I just use minor tweaks to the bass and treble control, they are very reactive,
And the passive tone knob works during active mode too - so you can still get some old school ‘muffled’ bass, if you know what I mean?!