Nice basses! Here's what I found in the files:
sn: 81-1851*
model name: Distillate
model number: DSB4
top: Koa
accent: none
body: Mahogany
neck: 5-piece Maple and Purpleheart
scale: 30.75 short
fingerboard: Ebony
inlays: mother of pearl oval
pickups: AXY
controls: volume, filter, Q-switch, bass cut/clat/boost switch, treble cut/flat/boost switch, LED indicator, mono output
originally made for: Brian Guitars, CT
birthday: June 25, 1981
The original owner was from Connecticut.
*Serial number is clearly stamped this number, and it's recorded in the file the same way. However, It should have been issued as 81D1851. Maybe the short scale distracted us!
Onward to the Essence:
sn: 93K7729
model name: Essence
model number: KLB4
top: Walnut
accent: Maple pinstripe
body: Mahogany
neck: 3 piece Maple with 2 Walnut pinstripes
scale: 34 long
fingerboard: Ebony
inlays: none
pickups: MXY
controls: volume, pan, filter, mono output
originally made for: Ross Systems, Spain
birthday: May 4, 1993