An excellent and sought-after old school drum machine. It works as it should and is in fine shape.

Here's the Boss write-up:
An electronic metronome that lets you practice rhythms.
The DB-33 features four basic rhythm units with individual level controls for each that let the user accentuate the rhythm.
Can be used to practice virtually any type of rhythm, from complex time signatures to syncopation.
The beat can be set at either 0, 2, 3, 4, 5, or 6 beats per measure.
The tempo is continuously variable between 40 and 208 quarter-note beats per minute, and can be monitored through both a built-in speaker and two LEDs.
NEW PRICE!! $89 OBO shipped to CONUS
Thanks for looking!