The Etherwave Plus Theremin Kit with 110V Power Supply from Moog is a build-it-yourself kit that includes all the parts you need to create an Etherwave Theremin Plus including an a pre-built circuit board and an unfinished wood cabinet. Several wiring points requiring soldering.
The kit also includes a DVD that contains two video tutorials: "Clara Rockmore: The Greatest Theremin Virtuosa" and "Mastering the Theremin, Featuring Lydia Kavina."
Note:
This kit requires several wiring points to be soldered.