This seems to be a basic acoustic guitar preamp, rehoused from the side of a guitar into a weird curved wooden box. Might be handy if you've got a passive pickup in your instrument. Priced cheaper than a burger and fries from The Standard around the corner.

Model: West Active System Acoustic Preamp
Made: China, recent model
Serial: N/A
Type: pre-amp/DI
Power Input: 9v battery only
Accessories: none

Condition notes: used, no major marks. Tested and fully functional.
Overall: very good condition (8/10)