This is the brother of the Roland/Boss Dr-220a.
Produced around 1985/ 86, it's very small & light.
The sounds are all digital.
It's electronic sounds are very different to the acoustic Boss 220e version.
Definitely worth having both.
The screen is similar in style to the Roland 707, 505 etc.
So it's easy to program.
Nice soft padded case.
One of the best features of this machine are the trig in & outs.
So easy to sync with other gear.
Runs off 9V or batteries.
Headphone & main audio out.