This video, via AnalogAudio1, is a demo of the Vermona ER-9 Rhythm Box.
The Vermona ER-9 is a rare vintage (1976) East German rhythm box. The manufacturer is VEB (Volkseigener Betrieb) Klingenthaler Harmonikawerke.
It’s not programmable, but presets can be free feely combined, and every drum soiund has a dedicated volume control.
I had no idea that Vermona has been around that long!
Here’s me with one in 1986, I think…
http://imgur.com/oJ6LQgB
😀