everything in the world of recording, the better sound
you have at source the easier it is to get great results
and this is particularly true when recording bass guitar.
There are a few great bass guitars and amps out there
but sadly there are also shed loads of rubbish. Like
all instruments the bass definitely sounds better in
the hands of a decent player and there is not a lot
you can do as a sound engineer to change that but checking
the intonation along the neck is a must and you can
really improve your recordings by getting rid of those
annoying buzzes by setting up the action properly by
tweaking the truss rod and adjusting the saddles. However
do practice this on your own bass first!