The Lumatone (microtonal isomorphic keyboard, and successor to the "Terpstra" keyboard) may be available for purchase as early as this summer : r/musictheory
Sjoerd 슕 Visscher on X: "I have ordered a @LumatoneKeys keyboard! I can't wait to finally have enough keys to really play on the keyboard layout that I invented: https://t.co/bFY7GjCPhk Here's what
Lumatone Isomorphic Keyboard | Reverb
NAMM 2020: Lumatone Microtonal Keyboard and isomorphic instrument - gearnews.com