I'm running a fender jazz bass through an Ashdown Mag 600 head and Ashdown 4x10 cab... after much fiddling I've pretty much got my tone as I like it... however I'm asking if playing through either the Active or Passive inputs will effect that tone... my Fender sounds a bit muddy through the passive input... any advice will be greatly appreciated..
The active input just lowers the level going into the preamp. I would tend to use the passive input always and use the preamp level, keeping the needle in the meter in the right sort of range.