Hey guys i have a active bass and a passive bass! I use a hartke head live wich has the active and passive input seperate! Well we are playing so many shows that i want to keep both basses plugged in at the same time so i can make a fast switch! How do i go about this operation? Ive played bass for 20 years so iam not bass stupied i just never had to do this before! Is it a ab box that i need to do this? And if so which brand? Thanks yall!