Years ago this synthesizer was introduced at the Frankfurter Musik Messe. In fact it was a controller for software base synths: included in the package. Two of them where built on Creamware (the Minimax and Pro-one soft synth) and one was the Steinberg Model-E soft synth.
We’re sure if it is still available and has been upgraded to software platforms used today. If you know more, or if you own a midimax, please let us know.