One of the early wavetable synths coming out near the Korg Wavestation, but rack mount only. This one has the curtiss analog vcf/vca chips though to make something more along the lines of the prophet VS instead of just samples of it. From what I understand the unit received a ROM upgrade in 94 and became the Microwave I but is the same machine hardware wise pretty much. The 'Waveslave', a voice expander worked with the original but not the newer version unfortunately.
Never worked on one. till-kopper.de has hints on filter calibration etc.
I have no parts for these but CEM parts show up on ebay now and then.