It is a sweet bass.

Here's what I found out about this bass:
 
serial number: 90D5809
model name: Distillate
model number: DMB4
top: Quilted Maple
body: Mahogany
neck: 5-piece Maple and Purpleheart
scale: 32 medium
fingerboard: Ebony
inlays: Pearloid (plastic) ovals*
surface: fretless
pickups: AXY4
controls: Distillate volume, pickup selector switch, filter, Q-switch, bass cut/flat/boost, treble cut/flat/boost, mono output
originally made for: Air Force, Lackland, TX
birthday: Ugh! not recorded, but likely February 1990