I wonder if demand was just too low to keep making them. The resale prices are a clue. Unfortunately I’m one of the people trying to sell mine and there’s been literally no interest, despite it being in mint condition and €500 less than what I paid.
I felt a few design choices were a real missed opportunity. The screen is too small considering how much space was left over. Ergonomically that was an issue too, since the playing position of a keys-based instrument is often wider than a desktop module and the screen is too small for that viewing distance. Also, a 4-voice synth is too limiting for what’s essentially a two-handed keyboard. The amount of times I started playing something and realised I didn’t have enough voices for the part. That’s intuitive with a desktop module but not something this big. As somebody said above, it should have been at least 6 voices.
So yeah, I’d fully understand it being discontinued. I’m dying to swap mine for a Digitakt but I expect to be waiting a long time for a buyer.