Australian Theremin Kits
Simple kit. The completed instrument puts out a pure sine wave tone.
EffectsForLess.com: Theremins
Moog Etherwave Theremins for sale: standard, signature, and kit versions.
Jake Rothman Theremin
Theremin sales, design, and manufacture. Range of ready made theremins and kits, and midi converter.
No.1 Electronics
Collection of unusual theremins for sale with additional information about each one.
Theremaniacs Theremin and Harmonic Percolators
Manufactures a pitch only Theremin with changeable timbre. Also presented is the Harmonic Percolator, a distortion pedal.
Wavefront Technologies
Makers of two models af theremins, and also a MIDI interface