Parva demo video with LinnStrument. I've set it up so that the x-axis controls per-note pitch and the y-axis per-note filter cutoff, I'm not using the z-axis. The LinnStrument is connected directly to the Parva's USB MIDI host port, which also provides power. The audio is recorded through my Metric Halo ULN-8 audio interface without any sound processing besides normalisation.
The Parva has eight independent analog voices that can be configured in a multi with a dedicated MIDI channel for each voice. Each voice can play a different preset, but I'm using the same preset for all voices here to allow for per-note expression. In this multi, each MIDI channel is also sent to two voices, creating a unison sound, while still having full control over 4 independent notes.