I think effects is the appropriate forum for this post. If not, I apologize.
How does a preamp like the MXR M-80 work in conjunction with the onboard preamp on a bass? Are you supposed to set the bass preamp at flat settings and make all adjustments on the M-80? I'm particularly confused when you combine this with the amplifier.
I have a MusicMan bass, an M-80, and the MarkBass TA501 amp. Currently, I just leave my MusicMan and amp settings at flat and make all the adjustments at the M-80. Am I a moron for not making adjustments at each stage?

How do you guys do it?
Thanks.