Have you had a play the Korg Mini700FS before. Such an amazing little thing. Somebody say bass? It shakes any room it ways others simply don't!. It has clearly not been recognized for the insane instrument that it is. While not specifically a eurorack device there's CV/gate inputs (5pin midi in, sync in/out, USB midi, arpeggiator/repeater) and an ext input to the filter and spring reverb. The ring modulation is amazing, not sure if the ext input feeds that. If anyone can wake the world up to what they're missing, not to mention get amazing deals on these now, it'd be you. Just a thought.