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Oberheim Two Voice (Wikipedia)
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Oberheim Two Voice
Synthesizer · United States
The Oberheim Two Voice (TVS-1), produced from 1975 to 1979, was Oberheim's first keyboard synthesizer: two SEM voice modules coupled to a 37-note keyboard and a simple two-channel analog sequencer. It offered two independently programmable voices, each with the SEM's twin VCOs and multimode filter, and is regarded as one of the first compact polyphonic performance synthesizers.