Tone
Active vs. Passive: Consider that from the beginning the Music Man Bass was battery powered and did not have an Active/Passive switch.
What is the instrument response? What are the tonal characteristics of the instrument? Is it a bolt-on? a neck-through? If you listen to it unplugged (ear to the bass side horn of the instrument): what do you hear? Strong lows? Brilliant highs? How much mid do you hear? How much of this spectrum do you want in the amplified sound?
Remember that this way of listening to the instrument tells only part of the story. Even though the deep bass is more easily heard this way than by listening from an arm's length away, you are still hearing a treble enhanced version of the instrument's tone. It is a useful approximation to the sound of the wood.
The tone of the instrument is the combination of wood + pickups + electronics.