Yamaha GX-1Released in 1973
The GX-1 was Yamaha's precursor to the monstrous CS-80, and less than ten were ever manufactured, selling at over $50,000 when new. The GX-1 is an 8-voice analog polysynth, and has two 61-note velocity-sensitive keyboards, and a third 37-note pressure-sensitive mini-keyboard, as well as a 25-note pedal board.
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