MIDI fader controller/soundboard USB C from The current stuff on Tindie
Nuances Midi Controller & Composer Pierre Caillet | DIY Film Composer
Amazon.com: AKAI Professional MIDImix - USB MIDI Controller Mixer with Assignable Faders & Master Fader, 24 Knobs and 16 Buttons, 1 to 1 Mapping With Ableton Live : Musical Instruments