The Thunder features a touch-plate array of fifty separate regions, or keys. Keys are sensitive to the contact, pressure, and location of a player's fingers. The player can assign parameters to produce a desired output. Thunder is a pure MIDI controller, with no internal sound generator of its own.
- Chadabe, Joel (1997). Electric Sound: The Past and Promise of Electronic Music.
- Hopkin, Bart (1996). Gravikords, Whirlies & Pyrophones: Experimental Musical Instruments.