1988 Elka OMB 3 Synthesizer Drum Bass Rhythm Italo Disco Machine Orchestra Made In Italy

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video upload by keyboard resource

Walk thorugh the preset sounds followed by rhythm demos at 3:22.

via this Reverb listing

"According to the manual, the OMB 3 is a sound module version of the ELKA C92 and X35 dual-manual organ/synthesizer/drum machines. You can program four rhythm patterns, four "orchestra (solo)" tones (envelope timbre, envelope level & wave), chord sequences (including tempo and sound registrations). There is a way to set it up to receive different data (chord, treble, bass, transpose, pitch) on separate MIDI channels."