I think a lot of what Tom does is, shall we say, 'experimental' and a lot of it is for show (tbh).
The spillage from string impact between the pickups surely negates the individual outputs.
there is no way to separate signal from the bass strings and drone strings. As soon as you
get hold of a 12er, you'll see that. It's the same as a 12 string guitar.
He is certainly going to be able to fine tune his sound between the rigs, but I reckon you can
get a great overall sound with what i have, without resorting to an arena size bass rig!.
He uses the Rickenbacker cabinet and Reeves / Hi Watts.
I think the AC30's are Robin's.