I need help... I need to get the outputs of my three basses balanced before the signal hits my effects loop. my three basses are: -Acacia Custom (active) -Lakland skyline 55-02 (active) -Lakland skyline Joe osborn (passive) I'm having issues with the passive bass not being "up to par" so to speak with the actives. is there a devices that can match the output of two, or even better 3, basses so that way i can switch through out a set with out having to adjust the gains and outputs of all the effects that I'm running? Would the Raven Labs MDB-1 do the trick? any other ideas?