Analysis of information sources in references of the Wikipedia article "Tom Oberheim" in English language version.
From 1977 Oberheim also marketed the OB1, ... In fact, the OB1 was the first programmable monophonic synthesizer, ... Again, not all the front-panel parameters could be memorized - LFO and tuning settings still had to be handled by the player - ...
Oberheim also launched a polyphonic digital sequencer (DSX) and a sampled-sound drum machine (DSX), both equipped with a custom 'parallel buss' interface for interconnection that predated MIDI, ...
