perhaps as both show-goers and performer(s) could check-in at the door (kiosk type), a computer could/would average their preferred tone, the amp would then deliver the results requested, maybe as pandora delivers
"Show-goers" do not care about bass tone AT ALL.
They care about song selection, talent, air temperature, drink prices, available singles in the room, etc.
If there were a list of 1,000 things any given audience member cares about, bass tone wouldn't even make the list.


