To do this, two Multi-Traks were used, one with a bad keyboard. The aluminum case was cut on one of the cases and its top was piggy backed on to the multi-trak with a good keyboard. The master controls the slave via midi which includes sequencer control. Still has 16 individual voice outputs and four 'mixed' outputs. A custom cable was made to join outputs into a single mono or stereo output for both synthesizers.
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