I stand corrected Sonicus and take on your opinion, in fact somewhere on this board I suggested adapting a regulated power supply to feed non series instruments.
I suppose it could be done, a good quality regulated PS, tie wrap a cord with a 3.5 or smaller power plug and put a socket on your bass somewhere.
Trouble is it is another item to plug in, my gear is relatively small compared some members who have racks,power amps, effects units etc.