The Hartmann Neuron.
I have wanted one of these since it first came out. I got excited by the virtual instrument version that was released shortly after the keyboard and then was crushed when the company went belly up soon thereafter. It’s been on my eBay search list for years. Every so often one comes up…and it’s always at least $3K. Too too much. Still out of reach. Very frustrating.
The above is a demo by Taylor Dupree of some of the pads and textures that can be created with this machine. I LOVE these tones and sounds and producing something akin to these (for me) often involves complex processing chains, resampling, and edits. The thought that you can create and control these types of tonalities in real time from a keyboard absolutely blows me away.
I’ll keep searching. So few were made, I doubt the price will ever drop much.